TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 3, 10:15 PM EST
Polymarket
This market refers to the tennis match between Ayumi Miyamoto and Gaeul Jang in the ITF Women Sapporo, originally scheduled for June 26, 2026 at 10:15PM ET. This market will resolve to 'Ayumi Miyamoto' if Ayumi Miyamoto advances against Gaeul Jang. This market will resolve to 'Gaeul Jang' if Gaeul Jang advances against Ayumi Miyamoto. 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 Ayumi Miyamoto and Gaeul Jang in the ITF Women Sapporo, originally scheduled for June 26, 2026 at 10:15PM ET. This market will resolve to 'Ayumi Miyamoto' if Ayumi Miyamoto advances against Gaeul Jang. This market will resolve to 'Gaeul Jang' if Gaeul Jang advances against Ayumi Miyamoto. 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 mechanisms. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets like this one are priced by traders themselves—creating a crowdsourced probability estimate. Sportsbooks may adjust faster for sharp money, whereas prediction markets can lag if retail traders dominate. Neither is inherently more accurate; comparing the two can reveal where professional bettors and casual traders disagree on the likely outcome of this match.
On Polymarket, traders set the price 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 current odds reflect the collective assessment of all participants trading this contract. As new information emerges or sentiment shifts, traders adjust their positions, moving the price up or down. This continuous repricing mechanism means the market price at any moment represents the real-time consensus probability among active traders on the platform.
This market resolves around Jul 4, 2026, once the match concludes and the result is verifiable from credible public sources. The outcome will be confirmed based on the official match result—which player wins the ITF Sapporo event. Until that point, traders can continue to adjust positions as the event approaches and new developments emerge. Resolution happens automatically once the outcome is determined and validated.
Several factors could shift trader sentiment before this market resolves. Recent performance data, head-to-head records, and injury reports on either player could trigger significant repricing. Court conditions at the venue, draw strength, and momentum from prior rounds in the tournament may also influence positions. News about player form, coaching changes, or other competitive developments could prompt traders to reassess their outlook. Even technical factors like betting patterns or large trades can create price swings as the match date approaches.