TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 31, 12:37 PM EST
Polymarket
This market refers to the tennis match between Thiago Monteiro and Kimmer Coppejans in the Porto, originally scheduled for August 31, 2026 at 5:00AM ET. This market will resolve to 'Thiago Monteiro' if Thiago Monteiro advances against Kimmer Coppejans. This market will resolve to 'Kimmer Coppejans' if Kimmer Coppejans advances against Thiago Monteiro. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 14, 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 ATP Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Thiago Monteiro and Kimmer Coppejans in the Porto, originally scheduled for August 31, 2026 at 5:00AM ET. This market will resolve to 'Thiago Monteiro' if Thiago Monteiro advances against Kimmer Coppejans. This market will resolve to 'Kimmer Coppejans' if Kimmer Coppejans advances against Thiago Monteiro. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 14, 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 ATP Tour. A consensus of credible reporting may also be used.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders continuously submit bids and asks that determine the current implied probability for each possible outcome. The platform’s order book adjusts prices based on supply and demand, so if new information suggests one player may have an advantage, that outcome’s price can rise while the other falls, reflecting the real-time consensus of all active participants.
This market resolves around Sep 7, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The final result will be determined by the official match conclusion, and the platform will update the market accordingly based on that authoritative information.
Injuries, changes in coaching strategy, weather conditions, or key performances in preceding matches can all shift trader sentiment and move this market. Any public announcement or notable incident that impacts the perceived likelihood of each player winning or the match ending in a draw will cause price fluctuations as participants reassess their positions on Polymarket.