TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 28, 12:15 PM EST
Polymarket
This market refers to the tennis match between Jo-Yee Chan and Eunhye Lee in the ITF Women Rancho Santa Fe, originally scheduled for July 21, 2026 at 12:15PM ET. This market will resolve to 'Jo-Yee Chan' if Jo-Yee Chan advances against Eunhye Lee. This market will resolve to 'Eunhye Lee' if Eunhye Lee advances against Jo-Yee Chan. 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 Jo-Yee Chan and Eunhye Lee in the ITF Women Rancho Santa Fe, originally scheduled for July 21, 2026 at 12:15PM ET. This market will resolve to 'Jo-Yee Chan' if Jo-Yee Chan advances against Eunhye Lee. This market will resolve to 'Eunhye Lee' if Eunhye Lee advances against Jo-Yee Chan. 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 manage risk, while prediction markets aggregate trader beliefs through continuous price discovery. This market may show higher or lower implied probabilities than traditional sportsbooks, depending on which venue's participants have stronger conviction or better information. Comparing the two can reveal where smart money is positioning itself ahead of the match.
On Polymarket, this market is priced through an automated market maker that converts trader buy and sell orders into real-time odds. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price reflects the cumulative belief of all participants; as more traders back one outcome, the odds shift accordingly. Liquidity and order flow directly influence how quickly prices move, so periods of high trading activity can produce sharper swings than quieter intervals. The mechanism ensures continuous pricing without reliance on a central operator to set lines.
This market resolves around Jul 28, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result—which player won the ITF Rancho Santa Fe contest. Resolution typically occurs within hours of the final point, allowing traders to settle positions promptly. Early resolution is possible if the match is cancelled or abandoned under tournament rules.
Player injury announcements, recent form and head-to-head records, and court surface conditions at Rancho Santa Fe can all shift trader sentiment. Withdrawal or late scratches by either competitor would trigger immediate repricing. Pre-match news—such as coaching changes, fitness updates, or weather forecasts—often prompts sharp moves as new information reaches the market. Betting syndicates and professional traders may also adjust positions based on proprietary analysis, creating volume spikes that reflect shifting conviction before the opening serve.