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, 6:25 PM EST
Polymarket
This market tracks whether the tennis match between Tamara Zidansek and Alevtina Ibragimova in Palermo will last over or under 2.5 sets, with the current probability on Polymarket set at 100%. The resolution will be based on official results from the WTA website. The match is scheduled to conclude by July 27, 2026, and this date marks the end of the betting period for final settlement.
This market refers to the tennis match between Tamara Zidansek and Alevtina Ibragimova in the Palermo, originally scheduled for July 20, 2026 at 5:00AM ET. This market will resolve to 'Tamara Zidansek' if Tamara Zidansek advances against Alevtina Ibragimova. This market will resolve to 'Alevtina Ibragimova' if Alevtina Ibragimova advances against Tamara Zidansek. 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 manage risk, while prediction markets aggregate the beliefs of traders wagering real money on outcomes. For this market, comparing the implied probability on Polymarket to major sportsbook lines can reveal whether one venue perceives the matchup differently. Prediction markets sometimes lead sportsbooks in pricing shifts, especially when new information reaches traders faster than bookmakers adjust their lines.
On Polymarket, this market is priced through an automated market maker that calculates odds based on the ratio of shares held in each outcome. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy and sell shares directly against the liquidity pool, and the price adjusts continuously as the pool composition changes. The current probability reflects the accumulated trades of all participants. Higher trading volume typically narrows spreads and improves price discovery, making the odds more reliable as a consensus estimate of the match result.
This market resolves around Jul 27, 2026, once the Palermo tennis match concludes and the result is verifiable from credible public reporting. The outcome is determined by which player wins the match according to official tournament records. Traders holding shares in the winning outcome receive their payout, while incorrect positions expire worthless. Resolution typically occurs within hours of the final point, allowing the market to settle quickly and fairly based on the actual match result.
Several factors could shift odds before the match concludes. Player injury reports or withdrawal announcements would dramatically reprrice the market, as would recent performance data or head-to-head history becoming widely known. Weather conditions at the Palermo venue, court surface conditions, or unexpected lineup changes could trigger trader repositioning. Real-time match momentum—such as one player winning the first set decisively—typically drives sharp price movements as traders update their win probability estimates. Breaking news about either competitor's form or fitness also influences market sentiment.