TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 7, 1:01 AM EST
Polymarket
This market refers to the tennis match between Yuichiro Inui and Yu Tanaka in the M25 Sapporo, Qualifying, originally scheduled for September 6, 2026 at 10:00PM ET. This market will resolve to 'Yuichiro Inui' if Yuichiro Inui advances against Yu Tanaka. This market will resolve to 'Yu Tanaka' if Yu Tanaka advances against Yuichiro Inui. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 20, 2026, 11:59 PM ET (14 days after the scheduled start), 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 Yuichiro Inui and Yu Tanaka in the M25 Sapporo, Qualifying, originally scheduled for September 6, 2026 at 10:00PM ET. This market will resolve to 'Yuichiro Inui' if Yuichiro Inui advances against Yu Tanaka. This market will resolve to 'Yu Tanaka' if Yu Tanaka advances against Yuichiro Inui. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 20, 2026, 11:59 PM ET (14 days after the scheduled start), 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.
Typically, prediction market odds reflect the wisdom of the crowd and can differ from traditional sportsbook odds. Sportsbooks often set initial lines to balance action, while this market allows traders to freely adjust probabilities based on their own research and information. Discrepancies can arise due to differing levels of information, biases, or simply variations in opinion. Observing these differences can be a valuable exercise for informed bettors, potentially highlighting undervalued or overvalued outcomes.
On Polymarket, this market is priced through a continuous auction mechanism. Traders buy and sell shares representing their belief in the likelihood of a particular outcome. As more shares are purchased for a specific outcome, its price increases, reflecting a higher implied probability. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of shares is determined by supply and demand, with traders effectively setting the odds based on their collective assessment of the event. This dynamic pricing allows the market to quickly incorporate new information and adjust probabilities accordingly.
This market resolves around Sep 14, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the M25 Sapporo match between Yuichiro Inui and Yu Tanaka. The platform will verify the result against publicly available sources to determine the winning outcome and distribute payouts accordingly. Traders should monitor official announcements for the definitive result that will trigger market settlement.
Several factors could influence the price of shares in this market. Any news regarding the players’ form, potential injuries, or changes in playing conditions could significantly shift trader sentiment. Unexpected announcements about team strategies or even weather forecasts for the match day could also cause price fluctuations. Furthermore, large trading volume from informed participants could signal new information or a change in market perception, leading to price movements before the event concludes.