TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 21, 4:18 PM EST
Polymarket
This market tracks whether the Sara Bejlek versus Madison Keys match at the Cincinnati Open will have more or less than 21.5 games, and on Polymarket the current probability for exceeding 21.5 games is 100%, according to scores posted at https://www.wtatennis.com/scores. The match originally scheduled for August 21, 2026 at 11:00AM ET will serve as the key reference point for resolution.
This market refers to the tennis match between Sara Bejlek and Madison Keys in the Cincinnati Open, originally scheduled for August 21, 2026 at 11:00AM ET. This market will resolve to 'Sara Bejlek' if Sara Bejlek advances against Madison Keys. This market will resolve to 'Madison Keys' if Madison Keys advances against Sara Bejlek. 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 WTA Tour. A consensus of credible reporting may also be used.
Key signals that could shift this market include last-minute player injuries, weather updates affecting match conditions, or changes to the tournament schedule. High-profile analyst commentary, recent match performances, and betting trends on Polymarket also influence trader sentiment. As Aug 28, 2026 approaches, any news impacting either competitor’s readiness or form may cause rapid price swings, so monitoring pre-match updates is crucial.