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Sports·MLB

Chicago White Sox – Seattle Mariners

Polymarket
White Sox
White Sox
1
6
FINAL
Mariners
Mariners
$291.96K Vol.Polymarket

Moneyline

$225K Vol.

Spreads

$18.4K Vol.

Totals

$45.5K Vol.

Will there be a run in the first inning?

$3.2K Vol.

In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 2 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 5 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 4 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 3 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game by 2 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game by 3 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game by 4 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 9 or more runs in this game. If the combined total is less than 9, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 5 or more runs in this game. If the combined total is less than 5, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 6 or more runs in this game. If the combined total is less than 6, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 7 or more runs in this game. If the combined total is less than 7, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 8 or more runs in this game. If the combined total is less than 8, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 10 or more runs in this game. If the combined total is less than 10, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 11 or more runs in this game. If the combined total is less than 11, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Yes" if at least one run is scored in the 1st inning by either the Chicago White Sox or Seattle Mariners. This market will resolve to "No" if no runs are scored in the 1st inning by either team. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.The Chicago White Sox enter this interleague matchup with a 24-22 record and recent momentum after taking two of three from the Mariners earlier this month, including a comeback victory on May 10. Their improved offensive output and solid starting rotation have helped climb the AL Central standings, while the Mariners sit at 22-26 amid inconsistent results and a weaker AL West position. Upcoming pitching matchups feature Mariners arms like Bryan Woo and Luis Castillo against White Sox left-handers such as Noah Schultz and Anthony Kay, with both clubs dealing with typical bullpen usage and travel considerations across the series at T-Mobile Park. Recent form, home-field advantage for Seattle, and injury updates on key position players will shape the implied probabilities reflected in trader consensus.

In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40PM ET:

This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game.

This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game.

If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50.

The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
Volume
$291,963
End Date
May 26, 2026
Market Opened
May 12, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

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Frequently Asked Questions

The “White Sox vs. Mariners” market on Polymarket lets you trade on the outcome of the MLB game between the Chicago White Sox and the Seattle Mariners, scheduled for May 18, 2026 at 9:40 PM ET. The primary market is the moneyline — which team will win the game — where Mariners is currently priced at 100¢ (100% implied probability) and White Sox at 0¢ (0%). Beyond the moneyline, sports markets on Polymarket may feature spreads, totals (over/under), and player props, giving you multiple ways to trade on this game. Prices reflect real-time crowd-sourced probabilities. Shares in the correct outcome pay out $1 each when the market resolves after the game ends.

As of now, the “White Sox vs. Mariners” market has generated $292K in total trading volume across all market types (moneyline, spreads, totals, and player props). This volume reflects active engagement from the Polymarket trading community, and a deeper pool of traders generally means more informative, reliable odds. You can track live price movements and trade on any market directly on this page.

To trade on “White Sox vs. Mariners,” start by choosing the market type you want to trade: Moneyline (which team wins), Spreads (margin of victory), Totals (combined score over/under), or Player Props (individual player stat lines). Each market shows the current price for each side — for example, the moneyline shows CWS at 0¢ and SEA at 100¢. Select the side you want to trade, choose Buy to take a position or Sell to close an existing one, enter your amount, and click Trade. If your chosen side is correct when the game ends and the market resolves, your shares pay out $1 each. If it’s incorrect, they pay out $0. You can also sell your shares at any time before the game ends to lock in a profit or cut a loss.

The current moneyline odds for “White Sox vs. Mariners” show Seattle Mariners at 100¢ (100% implied probability) and Chicago White Sox at 0¢ (0%). All odds update in real-time as traders buy and sell shares, reflecting the latest collective view of how this game will play out. Check back frequently or bookmark this page to follow how the odds shift as game time approaches.

The “White Sox vs. Mariners” market resolves based on the official final score of the MLB game as reported by MLB’s official results, including overtime if applicable. Moneyline markets resolve to the team that wins the game. Spread markets resolve based on the final margin of victory relative to the posted line. Totals (over/under) markets resolve based on the combined final score of both teams. Player prop markets resolve based on official box score statistics. If the game is postponed or canceled, the market resolution rules (available in the Rules section on this page) specify how that scenario is handled. We recommend reviewing the full resolution criteria before trading.
Sports·MLB

Chicago White Sox – Seattle Mariners

Polymarket
White Sox
White Sox
1
6
FINAL
Mariners
Mariners
$291.96K Vol.Polymarket

Moneyline

$225K Vol.

Spreads

$18.4K Vol.

Totals

$45.5K Vol.

Will there be a run in the first inning?

$3.2K Vol.

In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 2 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 5 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 4 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 3 or more runs. Otherwise, this market will resolve to "Chicago White Sox". If the game ends in a tie, this market will resolve to "Chicago White Sox". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game by 2 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game by 3 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game by 4 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 9 or more runs in this game. If the combined total is less than 9, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 5 or more runs in this game. If the combined total is less than 5, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 6 or more runs in this game. If the combined total is less than 6, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 7 or more runs in this game. If the combined total is less than 7, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 8 or more runs in this game. If the combined total is less than 8, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 10 or more runs in this game. If the combined total is less than 10, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Over" if the Chicago White Sox and Seattle Mariners combine to score 11 or more runs in this game. If the combined total is less than 11, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40 PM ET: This market will resolve to "Yes" if at least one run is scored in the 1st inning by either the Chicago White Sox or Seattle Mariners. This market will resolve to "No" if no runs are scored in the 1st inning by either team. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.The Chicago White Sox enter this interleague matchup with a 24-22 record and recent momentum after taking two of three from the Mariners earlier this month, including a comeback victory on May 10. Their improved offensive output and solid starting rotation have helped climb the AL Central standings, while the Mariners sit at 22-26 amid inconsistent results and a weaker AL West position. Upcoming pitching matchups feature Mariners arms like Bryan Woo and Luis Castillo against White Sox left-handers such as Noah Schultz and Anthony Kay, with both clubs dealing with typical bullpen usage and travel considerations across the series at T-Mobile Park. Recent form, home-field advantage for Seattle, and injury updates on key position players will shape the implied probabilities reflected in trader consensus.

In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40PM ET:

This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game.

This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game.

If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50.

The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
Volume
$291,963
End Date
May 26, 2026
Market Opened
May 12, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Chicago White Sox and Seattle Mariners, scheduled for May 18 at 9:40PM ET: This market will resolve to "Chicago White Sox" if the Chicago White Sox win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

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Frequently Asked Questions

The “White Sox vs. Mariners” market on Polymarket lets you trade on the outcome of the MLB game between the Chicago White Sox and the Seattle Mariners, scheduled for May 18, 2026 at 9:40 PM ET. The primary market is the moneyline — which team will win the game — where Mariners is currently priced at 100¢ (100% implied probability) and White Sox at 0¢ (0%). Beyond the moneyline, sports markets on Polymarket may feature spreads, totals (over/under), and player props, giving you multiple ways to trade on this game. Prices reflect real-time crowd-sourced probabilities. Shares in the correct outcome pay out $1 each when the market resolves after the game ends.

As of now, the “White Sox vs. Mariners” market has generated $292K in total trading volume across all market types (moneyline, spreads, totals, and player props). This volume reflects active engagement from the Polymarket trading community, and a deeper pool of traders generally means more informative, reliable odds. You can track live price movements and trade on any market directly on this page.

To trade on “White Sox vs. Mariners,” start by choosing the market type you want to trade: Moneyline (which team wins), Spreads (margin of victory), Totals (combined score over/under), or Player Props (individual player stat lines). Each market shows the current price for each side — for example, the moneyline shows CWS at 0¢ and SEA at 100¢. Select the side you want to trade, choose Buy to take a position or Sell to close an existing one, enter your amount, and click Trade. If your chosen side is correct when the game ends and the market resolves, your shares pay out $1 each. If it’s incorrect, they pay out $0. You can also sell your shares at any time before the game ends to lock in a profit or cut a loss.

The current moneyline odds for “White Sox vs. Mariners” show Seattle Mariners at 100¢ (100% implied probability) and Chicago White Sox at 0¢ (0%). All odds update in real-time as traders buy and sell shares, reflecting the latest collective view of how this game will play out. Check back frequently or bookmark this page to follow how the odds shift as game time approaches.

The “White Sox vs. Mariners” market resolves based on the official final score of the MLB game as reported by MLB’s official results, including overtime if applicable. Moneyline markets resolve to the team that wins the game. Spread markets resolve based on the final margin of victory relative to the posted line. Totals (over/under) markets resolve based on the combined final score of both teams. Player prop markets resolve based on official box score statistics. If the game is postponed or canceled, the market resolution rules (available in the Rules section on this page) specify how that scenario is handled. We recommend reviewing the full resolution criteria before trading.