TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 4, 2:44 PM EST
Polymarket
This market tracks the likelihood that Iga Swiatek will win the set by at least two games against Sara Bejlek in their National Bank Open match. On Polymarket, Swiatek (-1.5) currently holds a 100.0% probability according to scores posted at https://www.wtatennis.com/scores. The match was originally scheduled for August 4, 2026 at 12:30 PM ET, serving as the key date to monitor for any updates or confirmations regarding the event's progression and ultimate resolution.
This market refers to the tennis match between Sara Bejlek and Iga Swiatek in the National Bank Open, originally scheduled for August 4, 2026 at 12:30PM ET. This market will resolve to 'Sara Bejlek' if Sara Bejlek advances against Iga Swiatek. This market will resolve to 'Iga Swiatek' if Iga Swiatek 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.
On Polymarket, this market reflects trader sentiment rather than traditional sportsbook lines. Prediction market odds can diverge because they incorporate real-time betting activity and may shift more rapidly with new information. Sportsbook odds are typically set by professional oddsmakers who factor in broader statistics and historical trends. The difference often comes down to liquidity and trader bias on Polymarket, where volume of $469,502 can amplify small shifts in perception. This creates unique pricing dynamics not always reflected in conventional sports betting markets.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, this market is priced through trader activity, where participants buy and sell shares based on their outlook. The current top outcome reflects the collective belief of market participants, with odds adjusting dynamically to trade volume and new information. This decentralized pricing mechanism allows for rapid shifts in sentiment.
This market resolves around Aug 11, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match conclusion, and the platform will update the market accordingly based on confirmed data from reliable sources.