Sports·ATP

Joao Fonseca vs Gabriel Diallo

Polymarket
Apr 6·9:00 AM
J. FonsecaJ. Fonseca
-
G. DialloG. Diallo
-
$94.13 Vol.Polymarket

Moneyline

$76 Vol.

Set Handicap

$10 Vol.

Total Sets

$4 Vol.

Total Games

$0 Vol.

1st Set

1st Set Winner

$5 Vol.

1st Set Total Games

$0 Vol.

This market refers on the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 at 5:00AM ET. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Gabriel Diallo. This market will resolve to 'Gabriel Diallo' if Gabriel Diallo advances against Joao Fonseca. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed across all sets equals or exceeds 22. Otherwise, it will resolve to "Under." All tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to “Fonseca” if Joao Fonseca wins the first set. It will resolve to “Diallo” if Gabriel Diallo wins the first set. If the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled (not played at all) or is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50. Resolution will be based on official ATP match statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of sets completed equals or exceeds 3. Otherwise, it will resolve to "Under." A super tie breaker is considered as one (1) set for total set markets. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed across all sets equals or exceeds 23. Otherwise, it will resolve to "Under." All tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed across all sets equals or exceeds 24. Otherwise, it will resolve to "Under." All tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Fonseca" if Joao Fonseca wins by 2 or more sets than Gabriel Diallo, based on the final completed score. Otherwise, it will resolve to "Diallo." If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP results.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed in the first set equals or exceeds 9. Otherwise, it will resolve to "Under." Any first-set tiebreak counts as one (1) game toward the total. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50. Resolution will be based on official ATP results.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed in the first set equals or exceeds 10. Otherwise, it will resolve to "Under." Any first-set tiebreak counts as one (1) game toward the total. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50. Resolution will be based on official ATP results.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed in the first set equals or exceeds 11. Otherwise, it will resolve to "Under." Any first-set tiebreak counts as one (1) game toward the total. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50. Resolution will be based on official ATP results.Joao Fonseca holds a trader consensus edge over Gabriel Diallo in their first-round Rolex Monte Carlo Masters matchup on clay, driven by the 19-year-old Brazilian's superior surface affinity—highlighted by his 2025 Buenos Aires ATP title and recent head-to-head win (6-2, 6-2 in 2024 Lexington Challenger)—against Diallo's big-serving style that struggles more on slow clay. Ranked No. 40 to Diallo's No. 36, Fonseca boasts a 5-5 YTD mark with recent clay showings, while Diallo (5-8 YTD) received a first-round bye in Bucharest last week but exited early in Miami. No injuries reported; mild sunny conditions forecast favor baseline grinding, with the evenly split 1-1 H2H underscoring upset potential for the Canadian.

This market refers on the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 at 5:00AM ET.

This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Gabriel Diallo.

This market will resolve to 'Gabriel Diallo' if Gabriel Diallo advances against Joao Fonseca.

If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.

If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.

If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.

The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Volume
$94
End Date
Apr 13, 2026
Market Opened
Apr 4, 2026, 12:00 AM ET

Resolution Source

https://www.atptour.com/en/scores/current

Resolver

0x65070BE91...
This market refers on the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 at 5:00AM ET. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Gabriel Diallo. This market will resolve to 'Gabriel Diallo' if Gabriel Diallo advances against Joao Fonseca. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

Beware of external links.

Frequently Asked Questions

The “Diallo vs. Fonseca” market on Polymarket lets you trade on the outcome of the ATP game between the Gabriel Diallo and the Joao Fonseca, scheduled for April 6, 2026 at 5:00 AM ET. The primary market is the moneyline — which team will win the game — where Fonseca is currently priced at 75¢ (75% implied probability) and Diallo at 26¢ (26%). 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 “Diallo vs. Fonseca” market has generated $94 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 “Diallo vs. Fonseca,” 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 DIALLO at 26¢ and FONSECA at 75¢. 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 “Diallo vs. Fonseca” show Joao Fonseca at 75¢ (75% implied probability) and Gabriel Diallo at 26¢ (26%). 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 “Diallo vs. Fonseca” market resolves based on the official final score of the ATP game as reported by ATP’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·ATP

Joao Fonseca vs Gabriel Diallo

Polymarket
Apr 6·9:00 AM
J. FonsecaJ. Fonseca
-
G. DialloG. Diallo
-
$94.13 Vol.Polymarket

Moneyline

$76 Vol.

Set Handicap

$10 Vol.

Total Sets

$4 Vol.

Total Games

$0 Vol.

1st Set

1st Set Winner

$5 Vol.

1st Set Total Games

$0 Vol.

This market refers on the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 at 5:00AM ET. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Gabriel Diallo. This market will resolve to 'Gabriel Diallo' if Gabriel Diallo advances against Joao Fonseca. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed across all sets equals or exceeds 22. Otherwise, it will resolve to "Under." All tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to “Fonseca” if Joao Fonseca wins the first set. It will resolve to “Diallo” if Gabriel Diallo wins the first set. If the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled (not played at all) or is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50. Resolution will be based on official ATP match statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of sets completed equals or exceeds 3. Otherwise, it will resolve to "Under." A super tie breaker is considered as one (1) set for total set markets. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed across all sets equals or exceeds 23. Otherwise, it will resolve to "Under." All tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed across all sets equals or exceeds 24. Otherwise, it will resolve to "Under." All tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP statistics.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Fonseca" if Joao Fonseca wins by 2 or more sets than Gabriel Diallo, based on the final completed score. Otherwise, it will resolve to "Diallo." If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50. Resolution will be based on official ATP results.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed in the first set equals or exceeds 9. Otherwise, it will resolve to "Under." Any first-set tiebreak counts as one (1) game toward the total. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50. Resolution will be based on official ATP results.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed in the first set equals or exceeds 10. Otherwise, it will resolve to "Under." Any first-set tiebreak counts as one (1) game toward the total. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50. Resolution will be based on official ATP results.This market refers to the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 2026. This market will resolve to "Over" if the total number of games completed in the first set equals or exceeds 11. Otherwise, it will resolve to "Under." Any first-set tiebreak counts as one (1) game toward the total. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50. Resolution will be based on official ATP results.Joao Fonseca holds a trader consensus edge over Gabriel Diallo in their first-round Rolex Monte Carlo Masters matchup on clay, driven by the 19-year-old Brazilian's superior surface affinity—highlighted by his 2025 Buenos Aires ATP title and recent head-to-head win (6-2, 6-2 in 2024 Lexington Challenger)—against Diallo's big-serving style that struggles more on slow clay. Ranked No. 40 to Diallo's No. 36, Fonseca boasts a 5-5 YTD mark with recent clay showings, while Diallo (5-8 YTD) received a first-round bye in Bucharest last week but exited early in Miami. No injuries reported; mild sunny conditions forecast favor baseline grinding, with the evenly split 1-1 H2H underscoring upset potential for the Canadian.

This market refers on the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 at 5:00AM ET.

This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Gabriel Diallo.

This market will resolve to 'Gabriel Diallo' if Gabriel Diallo advances against Joao Fonseca.

If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.

If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.

If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.

The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Volume
$94
End Date
Apr 13, 2026
Market Opened
Apr 4, 2026, 12:00 AM ET

Resolution Source

https://www.atptour.com/en/scores/current

Resolver

0x65070BE91...
This market refers on the tennis match between Joao Fonseca and Gabriel Diallo in the Rolex Monte Carlo Masters, scheduled for April 6 at 5:00AM ET. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Gabriel Diallo. This market will resolve to 'Gabriel Diallo' if Gabriel Diallo advances against Joao Fonseca. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

Beware of external links.

Frequently Asked Questions

The “Diallo vs. Fonseca” market on Polymarket lets you trade on the outcome of the ATP game between the Gabriel Diallo and the Joao Fonseca, scheduled for April 6, 2026 at 5:00 AM ET. The primary market is the moneyline — which team will win the game — where Fonseca is currently priced at 75¢ (75% implied probability) and Diallo at 26¢ (26%). 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 “Diallo vs. Fonseca” market has generated $94 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 “Diallo vs. Fonseca,” 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 DIALLO at 26¢ and FONSECA at 75¢. 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 “Diallo vs. Fonseca” show Joao Fonseca at 75¢ (75% implied probability) and Gabriel Diallo at 26¢ (26%). 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 “Diallo vs. Fonseca” market resolves based on the official final score of the ATP game as reported by ATP’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.