TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 20, 3:00 AM EST
Polymarket
This market refers to the tennis match between Anna Bondar and Sara Sorribes Tormo in the Iasi Open, originally scheduled for July 13, 2026 at 3:00AM ET. This market will resolve to 'Anna Bondar' if Anna Bondar advances against Sara Sorribes Tormo. This market will resolve to 'Sara Sorribes Tormo' if Sara Sorribes Tormo advances against Anna Bondar. 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 Anna Bondar and Sara Sorribes Tormo in the Iasi Open, originally scheduled for July 13, 2026 at 3:00AM ET. This market will resolve to 'Anna Bondar' if Anna Bondar advances against Sara Sorribes Tormo. This market will resolve to 'Sara Sorribes Tormo' if Sara Sorribes Tormo advances against Anna Bondar. 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 traditional sportsbook odds often diverge because they reflect different participant pools and incentive structures. Sportsbooks set lines to balance action and protect their margin, while prediction markets are driven purely by trader belief—there is no house edge. This market aggregates the collective judgment of thousands of independent forecasters without intermediary markup. Comparing this market's implied probability to major sportsbook lines can reveal where professional oddsmakers and the broader prediction market community disagree, potentially highlighting value opportunities.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Shares representing each outcome trade continuously, and the price of each share reflects the current odds. When you buy or sell, the price adjusts based on the depth of liquidity available. This mechanism ensures transparent, friction-free pricing and allows traders to enter or exit positions at any time before the market closes, with the final price serving as the crowd's best estimate of the true likelihood.
This market resolves around Jul 20, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome is determined by the official result of the tennis event. Traders who correctly predicted the winner will receive their payout, while incorrect positions expire worthless. The resolution window typically closes shortly after the match ends, allowing the platform to confirm the final score and distribute winnings to holders of the winning shares.
Several factors can shift odds before the match begins or during play. Recent player form, head-to-head records, and injury updates are key catalysts. Court surface conditions, weather, and seeding can also influence trader sentiment. If either player withdraws or is ruled out, the market may halt or resolve early. During the match itself, momentum swings—such as a set win or a break of serve—often trigger sharp repricing as traders update their expectations in real time. News coverage and expert commentary may also sway the crowd's confidence in either competitor.