TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 9, 12:47 AM EST
Polymarket
This market refers to the tennis match between Ryota Tanuma and Naoya Honda in the M25 Sapporo, Main Draw, originally scheduled for September 8, 2026 at 9:00PM ET. This market will resolve to 'Ryota Tanuma' if Ryota Tanuma advances against Naoya Honda. This market will resolve to 'Naoya Honda' if Naoya Honda 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 22, 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 Naoya Honda in the M25 Sapporo, Main Draw, originally scheduled for September 8, 2026 at 9:00PM ET. This market will resolve to 'Ryota Tanuma' if Ryota Tanuma advances against Naoya Honda. This market will resolve to 'Naoya Honda' if Naoya Honda 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 22, 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 a different kind of wisdom than those found at sportsbooks. Sportsbooks set lines to balance action and incorporate a profit margin, while this market aggregates the beliefs of many individual traders. This can lead to differences in implied probabilities, especially when there’s strong public sentiment or information not yet fully priced into sportsbook lines. It’s common to see discrepancies, as prediction markets can sometimes identify value that sportsbooks miss, or vice versa, based on the diverse information considered by participants.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in the outcome. The price of a share directly corresponds to the probability of that outcome occurring. As more traders buy shares in a particular outcome, its price increases, reflecting a higher perceived chance of success. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market’s price dynamically adjusts based on supply and demand, offering a real-time assessment of expectations for the Tanuma vs Honda match. The current volume indicates the level of interest and conviction behind these predictions.
This market resolves around Sep 16, 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 Ryota Tanuma and Naoya Honda. The platform will verify the result against established sources to determine the winning outcome. Traders holding shares in the correct outcome will be entitled to a payout based on the final market price at the time of resolution. It’s important to monitor the event’s progress as the resolution date approaches.
Several factors could influence the price of shares in this market. Any news regarding the physical condition of either Ryota Tanuma or Naoya Honda, such as injuries or illness, would likely cause significant movement. Changes in public perception, potentially driven by expert analysis or pre-match commentary, could also shift the odds. Unexpected announcements about match conditions or rule changes might also impact trading activity. Finally, large trades by influential participants on Polymarket could temporarily affect the price, though the market typically self-corrects as more information becomes available.