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: Sep 2, 11:08 PM EST
Polymarket
This market refers to the tennis match between Ryota Tanuma and Hikaru Shiraishi in the M25 Urayasu, Main Draw, originally scheduled for September 2, 2026 at 9:00PM ET. This market will resolve to 'Ryota Tanuma' if Ryota Tanuma advances against Hikaru Shiraishi. This market will resolve to 'Hikaru Shiraishi' if Hikaru Shiraishi advances against Ryota Tanuma. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 16, 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 Ryota Tanuma and Hikaru Shiraishi in the M25 Urayasu, Main Draw, originally scheduled for September 2, 2026 at 9:00PM ET. This market will resolve to 'Ryota Tanuma' if Ryota Tanuma advances against Hikaru Shiraishi. This market will resolve to 'Hikaru Shiraishi' if Hikaru Shiraishi advances against Ryota Tanuma. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 16, 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.
Prediction market odds often reflect the collective wisdom of a diverse group of participants, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set their lines based on models and internal analysis, while this market is driven by individuals willing to put their capital at risk. Discrepancies can arise due to differing information, biases, or risk assessments. If you find a significant difference between the probabilities implied by this market and those offered by sportsbooks, it could indicate an opportunity for value betting, assuming you have a strong conviction about the true outcome.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in the likelihood of each outcome. The price of a share directly corresponds to the implied probability of that outcome occurring. As more traders participate, the prices adjust to reflect the collective assessment of the event's potential results. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market's price is determined solely by supply and demand within Polymarket, and is not influenced by external factors or other prediction markets.
This market resolves around Sep 10, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the M25 Urayasu match between Ryota Tanuma and Hikaru Shiraishi. The platform will verify the result against established sources to determine the winning outcome. Traders holding shares in the winning outcome will be paid out according to the final market price at the time of resolution, while those holding shares in losing outcomes will forfeit their investment.
Several factors could influence the trading activity and price movement in this market. Any news regarding the players' form, injuries, or changes in their training regimens could impact the perceived probabilities. Unexpected announcements about match conditions or potential disruptions could also cause shifts in sentiment. Furthermore, large trades by influential participants or changes in broader betting trends could create momentum and drive price fluctuations. Monitoring these signals will be key to understanding how this market evolves leading up to Sep 10, 2026.