TOTAL VOLUME:
$134.2b
24H VOL:
$129,159,707
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,442,132,418
404,744
Markets across
30,489
events
MATCHED EVENTS:
2,691
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 23, 9:00 PM EST
Polymarket
This market refers to the tennis match between Riyo Yoshida and Seo Yun Choi in the ITF Women Sapporo, originally scheduled for June 16, 2026 at 9:00PM ET. This market will resolve to 'Riyo Yoshida' if Riyo Yoshida advances against Seo Yun Choi. This market will resolve to 'Seo Yun Choi' if Seo Yun Choi advances against Riyo Yoshida. 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 Riyo Yoshida and Seo Yun Choi in the ITF Women Sapporo, originally scheduled for June 16, 2026 at 9:00PM ET. This market will resolve to 'Riyo Yoshida' if Riyo Yoshida advances against Seo Yun Choi. This market will resolve to 'Seo Yun Choi' if Seo Yun Choi advances against Riyo Yoshida. 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 the collective beliefs of traders who have financial skin in the game. This market may show odds that differ meaningfully from traditional sports betting sites, especially as new information emerges or as the event date approaches. Comparing the two can reveal where one venue perceives edge or mispricing relative to the other.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects the aggregate willingness of participants to take positions, with share values ranging from near-zero to one dollar. Higher prices indicate stronger collective confidence in that outcome. As match details, player form, or injury reports emerge, traders adjust their positions, moving prices to reflect updated expectations about the likely winner.
This market resolves around Jun 24, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will reflect which player wins the match according to official tournament records and widely recognized sports data sources. Until that point, traders can continue to buy and sell shares as odds fluctuate based on pre-match analysis, player updates, and other relevant signals. Early resolution is possible if the match is cancelled or withdrawn before completion.
Several factors could shift odds before the match concludes. Injury announcements or withdrawal news would trigger sharp repricing. Recent tournament results, head-to-head records, and player ranking changes often influence trader sentiment. Court surface conditions, weather forecasts, and draw position details can also matter for tennis outcomes. Media coverage highlighting form or momentum, as well as any coaching or equipment changes, may prompt position adjustments. Real-time match developments—if the market remains open during play—would drive the most dramatic price swings.