TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 25, 1:32 PM EST
Polymarket
This market refers to the tennis match between Sean Grosman and Amir Omarkhanov in the ITF M15 Monastir 27 Men, originally scheduled for August 25, 2026 at 5:00AM ET. This market will resolve to 'Sean Grosman' if Sean Grosman advances against Amir Omarkhanov. This market will resolve to 'Amir Omarkhanov' if Amir Omarkhanov advances against Sean Grosman. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 8, 2026, 11:59 PM ET (14 days after the scheduled start), 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Sean Grosman and Amir Omarkhanov in the ITF M15 Monastir 27 Men, originally scheduled for August 25, 2026 at 5:00AM ET. This market will resolve to 'Sean Grosman' if Sean Grosman advances against Amir Omarkhanov. This market will resolve to 'Amir Omarkhanov' if Amir Omarkhanov advances against Sean Grosman. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 8, 2026, 11:59 PM ET (14 days after the scheduled start), 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
Prediction market odds in this market often reflect a different risk assessment than traditional sportsbook lines. While sportsbooks may incorporate sharp lines and adjustments, the decentralized nature of prediction markets lets traders price outcomes based on their own research and sentiment. This can lead to wider or narrower spreads, depending on recent performance, injuries, or weather conditions affecting the players. Monitoring both sides provides a fuller picture of where the public and informed traders see value.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders manually set the odds for this market through their bets, which determines the current implied probability for each possible result. The platform’s pricing mechanism updates instantly with each new trade, reflecting the collective wisdom of participants. As the match date nears, news, player form, and other factors can cause rapid shifts in these odds. The top outcome displayed represents the consensus view of Polymarket users right now.
This market resolves around Sep 1, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The final result — based on the officially recorded winner — determines the paying side, closing all positions and distributing profits to holders of the correct outcome. Timing aligns with the match schedule, ensuring a clear and timely settlement for all participants.
Key signals such as recent match results, practice session reports, injury updates, or weather forecasts could shift this market. Any change in player availability or form may cause rapid re-pricing, especially as the event draws closer. Traders will also watch for betting trends on Polymarket, where large positions can amplify movements. Staying alert to official tournament announcements and live in-play updates is essential for anticipating swings in odds.