TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 20, 9:32 PM EST
Polymarket
This market tracks whether the first set of the Cincinnati Open tennis match between Iga Swiatek and Elena Rybakina will have over or under 9.5 games, and on Polymarket, the current probability for over 9.5 games is 100%, with settlement based on official WTA scores. The outcome will be determined by the match scheduled for August 20, 2026, so keep an eye on that date for resolution.
This market refers to the tennis match between Iga Swiatek and Elena Rybakina in the Cincinnati Open, originally scheduled for August 20, 2026 at 7:00PM ET. This market will resolve to 'Iga Swiatek' if Iga Swiatek advances against Elena Rybakina. This market will resolve to 'Elena Rybakina' if Elena Rybakina advances against Iga Swiatek. 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.
Prediction market odds in this market often differ from traditional sportsbook lines due to trader positioning and liquidity dynamics. While sportsbooks may set their lines based on broader analytics and risk management, prediction markets reflect the aggregated beliefs of participants, which can lead to variance in implied probabilities. Traders on Polymarket set prices through buying and selling contracts, so shifts in sentiment or new information can move this market independently of sportsbook offerings.
This market resolves around Aug 27, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is based on the official match conclusion, and the platform will update the market accordingly. Timing aligns with the tournament schedule, ensuring traders can track progress as the event unfolds.