TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 25, 4:00 AM EST
Polymarket
This market refers to the tennis match between Jahnie Van Zyl and Marilouise Van Zyl in the ITF Women Hillcrest, originally scheduled for July 18, 2026 at 4:00AM ET. This market will resolve to 'Jahnie Van Zyl' if Jahnie Van Zyl advances against Marilouise Van Zyl. This market will resolve to 'Marilouise Van Zyl' if Marilouise Van Zyl advances against Jahnie Van Zyl. 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 Jahnie Van Zyl and Marilouise Van Zyl in the ITF Women Hillcrest, originally scheduled for July 18, 2026 at 4:00AM ET. This market will resolve to 'Jahnie Van Zyl' if Jahnie Van Zyl advances against Marilouise Van Zyl. This market will resolve to 'Marilouise Van Zyl' if Marilouise Van Zyl advances against Jahnie Van Zyl. 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 traditional sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets aggregate the collective beliefs of traders risking real capital. For this tennis match, comparing the implied probability on Polymarket to major sportsbook lines can reveal where the crowd's conviction differs from bookmaker pricing. Sharper traders often exploit these gaps, making prediction markets a useful reference point for alternative perspectives on match outcomes.
On Polymarket, this market is priced through an automated market maker that allows traders to buy and sell outcome shares continuously. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The current odds reflect the cumulative positions of all participants; as traders adjust their holdings, the probability shifts in real time. Prices are determined by supply and demand rather than a central operator, meaning the market naturally incorporates new information and sentiment as the event approaches.
This market resolves around Jul 25, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will be determined by the official match conclusion and verified against authoritative tennis records. Until that point, traders can adjust positions as new information emerges, injuries are reported, or conditions change. Resolution is final once the event is officially concluded and documented.
Several factors may shift odds before Jul 25, 2026. Player injuries, fitness updates, or withdrawal announcements could trigger sharp repricing. Recent form, head-to-head records, and surface-specific performance data often influence trader positioning. Court conditions, weather forecasts, and draw-related news may also move the market. Additionally, large trades or sudden volume spikes can signal informed positioning, prompting other traders to reassess their views. Monitoring player social media, tournament updates, and betting line movements across sportsbooks can help you stay ahead of market-moving developments.