TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 21, 6:00 AM EST
Polymarket
This market refers to the tennis match between Ayla Aksu and Vendula Valdmannova in the Istanbul 2, originally scheduled for July 14, 2026 at 6:00AM ET. This market will resolve to 'Ayla Aksu' if Ayla Aksu advances against Vendula Valdmannova. This market will resolve to 'Vendula Valdmannova' if Vendula Valdmannova advances against Ayla Aksu. 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.
This market refers to the tennis match between Ayla Aksu and Vendula Valdmannova in the Istanbul 2, originally scheduled for July 14, 2026 at 6:00AM ET. This market will resolve to 'Ayla Aksu' if Ayla Aksu advances against Vendula Valdmannova. This market will resolve to 'Vendula Valdmannova' if Vendula Valdmannova advances against Ayla Aksu. 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 and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and protect their margin, while prediction markets are driven by traders risking real capital on their beliefs. This market aggregates the views of many independent forecasters, which can sometimes reveal edges that traditional oddsmakers miss. Comparing the two can highlight where public opinion and professional bookmakers disagree, though both sources offer valuable perspective on fight probabilities.
On Polymarket, this market is priced through an automated market maker that converts trader activity into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Buyers and sellers trade shares representing each outcome, and the price of those shares reflects the collective forecast. As more capital flows toward one fighter, that outcome's price rises and the implied probability adjusts accordingly. This mechanism ensures continuous pricing and allows traders to enter or exit positions at transparent, market-determined rates.
This market resolves around Jul 21, 2026, once the fight concludes and the result is verifiable from credible public reporting. The outcome is determined by the official match result—whether one fighter wins by decision, knockout, submission, or if the bout ends in a draw. Resolution happens after the event is confirmed through established sports media and official fight records. Traders holding winning shares receive their payout once the outcome is finalized and locked in.
Several factors can shift odds before the fight takes place. Injury announcements or fighter withdrawals would trigger sharp repricing. Training camp reports, public weigh-in results, and fighter statements can sway trader sentiment. Media coverage highlighting one competitor's form or recent performance may attract new capital. Betting line movements at major sportsbooks sometimes signal professional money flowing in one direction, which can influence prediction market traders. Close to fight day, any last-minute news—from rule changes to fighter health updates—could cause rapid probability swings.