TOTAL VOLUME:
$134.2b
24H VOL:
$126,590,312
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,439,516,703
404,175
Markets across
30,277
events
MATCHED EVENTS:
2,685
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 16, 4:30 AM EST
Polymarket
This market refers to the tennis match between Zoe Ulrich and Aya El Sayed in the ITF Women Monastir, originally scheduled for July 9, 2026 at 4:30AM ET. This market will resolve to 'Zoe Ulrich' if Zoe Ulrich advances against Aya El Sayed. This market will resolve to 'Aya El Sayed' if Aya El Sayed advances against Zoe Ulrich. 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Zoe Ulrich and Aya El Sayed in the ITF Women Monastir, originally scheduled for July 9, 2026 at 4:30AM ET. This market will resolve to 'Zoe Ulrich' if Zoe Ulrich advances against Aya El Sayed. This market will resolve to 'Aya El Sayed' if Aya El Sayed advances against Zoe Ulrich. 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 International Tennis Federation (ITF). 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 aggregate the beliefs of traders risking real capital on outcomes. Prediction markets can sometimes offer sharper or more efficient pricing because traders have direct financial exposure and no house edge to maintain. Comparing this market's odds to major sportsbook lines on the same match can reveal where professional and retail sentiment align or differ most significantly.
On Polymarket, this market is priced through an automated market maker that adjusts odds based on the volume and direction of trades. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy or sell shares representing each possible outcome, and the platform's algorithm continuously recalibrates the price to reflect supply and demand. Higher trading volume typically narrows spreads and improves price precision. The current odds reflect the aggregate conviction of all active traders, with each transaction moving the market incrementally until a new equilibrium is reached.
This market resolves around Jul 16, 2026, once the ITF Monastir match between the two players concludes and the result is verified against credible public sources. The outcome is determined by the official match result—specifically, which player wins the contest. No ambiguity exists around the core event; the market simply waits for the match to be played and the winner to be confirmed through standard tennis reporting channels. Resolution typically occurs shortly after the match concludes.
Market prices can shift based on player news, recent form, injury reports, or head-to-head history becoming more widely known among traders. Betting activity on external sportsbooks or social media discussion about the matchup may also influence Polymarket pricing as new information reaches the trading community. Changes in player rankings, recent tournament results, or court-surface performance data could alter trader confidence in either outcome. As the match date approaches, increased media coverage and professional analysis typically drive higher trading volume and tighter odds.