Sports·MLB

Astros vs Mariners

Polymarket
hou
HOU
3
9
LIVE
Top 8th
sea
SEA
$275.03K Vol.Polymarket

Moneyline

$248K Vol.

Spreads

$14.1K Vol.

Totals

$13.1K Vol.

Will there be a run in the first inning?

$2.9K Vol.

In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40PM ET: This market will resolve to "Houston Astros" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Houston Astros" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 6 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 7 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros and Seattle Mariners combine to score 12 or more runs in this game. If the combined total is less than 12, 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros and Seattle Mariners combine to score 13 or more runs in this game. If the combined total is less than 13, 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros and Seattle Mariners combine to score 14 or more runs in this game. If the combined total is less than 14, 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 Houston Astros 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.In this early AL West matchup at T-Mobile Park, the Houston Astros (around 6-7, clinging to second place) face the slumping Seattle Mariners (4-9 entering the series, fifth in division) with Lance McCullers Jr. (1-0, 3.27 ERA) starting for Houston against Luis Castillo (0-0, 2.79 ERA) for Seattle. Astros trader sentiment reflects their stronger start and historical edge in the rivalry despite mounting injuries—Cristian Javier (shoulder) and Jake Meyers (back) recently placed on IL, joining Hunter Brown and Josh Hader on the list—straining the rotation and bullpen. Mariners return home desperate after a low-scoring road trip (13 runs allowed in recent games), with Victor Robles sidelined by pectoral strain, but home-field advantage and Castillo's early command could spark an upset amid a tight series opener outcome.

In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40PM ET:

This market will resolve to "Houston Astros" if the Houston Astros 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
$275,032
End Date
Apr 18, 2026
Market Opened
Apr 4, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40PM ET: This market will resolve to "Houston Astros" if the Houston Astros 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.

Beware of external links.

Frequently Asked Questions

The “Mariners vs. Astros” market on Polymarket lets you trade on the outcome of the MLB game between the Seattle Mariners and the Houston Astros, scheduled for April 10, 2026 at 9:40 PM ET. The primary market is the moneyline — which team will win the game — where Mariners is currently priced at 99¢ (99% implied probability) and Astros at 1¢ (1%). 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 “Mariners vs. Astros” market has generated $275K 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 “Mariners vs. Astros,” 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 SEA at 99¢ and HOU at 1¢. 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 “Mariners vs. Astros” show Seattle Mariners at 99¢ (99% implied probability) and Houston Astros at 1¢ (1%). 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 “Mariners vs. Astros” 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

Astros vs Mariners

Polymarket
hou
HOU
3
9
LIVE
Top 8th
sea
SEA
$275.03K Vol.Polymarket

Moneyline

$248K Vol.

Spreads

$14.1K Vol.

Totals

$13.1K Vol.

Will there be a run in the first inning?

$2.9K Vol.

In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40PM ET: This market will resolve to "Houston Astros" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Houston Astros" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 6 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 7 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros and Seattle Mariners combine to score 12 or more runs in this game. If the combined total is less than 12, 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros and Seattle Mariners combine to score 13 or more runs in this game. If the combined total is less than 13, 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 Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40 PM ET: This market will resolve to "Over" if the Houston Astros and Seattle Mariners combine to score 14 or more runs in this game. If the combined total is less than 14, 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 Houston Astros and Seattle Mariners, scheduled for April 10 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 Houston Astros 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.In this early AL West matchup at T-Mobile Park, the Houston Astros (around 6-7, clinging to second place) face the slumping Seattle Mariners (4-9 entering the series, fifth in division) with Lance McCullers Jr. (1-0, 3.27 ERA) starting for Houston against Luis Castillo (0-0, 2.79 ERA) for Seattle. Astros trader sentiment reflects their stronger start and historical edge in the rivalry despite mounting injuries—Cristian Javier (shoulder) and Jake Meyers (back) recently placed on IL, joining Hunter Brown and Josh Hader on the list—straining the rotation and bullpen. Mariners return home desperate after a low-scoring road trip (13 runs allowed in recent games), with Victor Robles sidelined by pectoral strain, but home-field advantage and Castillo's early command could spark an upset amid a tight series opener outcome.

In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40PM ET:

This market will resolve to "Houston Astros" if the Houston Astros 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
$275,032
End Date
Apr 18, 2026
Market Opened
Apr 4, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for April 10 at 9:40PM ET: This market will resolve to "Houston Astros" if the Houston Astros 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 “Mariners vs. Astros” market on Polymarket lets you trade on the outcome of the MLB game between the Seattle Mariners and the Houston Astros, scheduled for April 10, 2026 at 9:40 PM ET. The primary market is the moneyline — which team will win the game — where Mariners is currently priced at 99¢ (99% implied probability) and Astros at 1¢ (1%). 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 “Mariners vs. Astros” market has generated $275K 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 “Mariners vs. Astros,” 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 SEA at 99¢ and HOU at 1¢. 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 “Mariners vs. Astros” show Seattle Mariners at 99¢ (99% implied probability) and Houston Astros at 1¢ (1%). 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 “Mariners vs. Astros” 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.