TOTAL VOLUME:
$154.4b
24H VOL:
$245,801,863
24H TRANSACTIONS:
2,984,028,936
OPEN INTEREST:
$1,902,097,102
417,059
Markets across
40,178
events
MATCHED EVENTS:
4,415
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 29, 12:27 AM EST
Polymarket
This market refers to the tennis match between Jumpei Yamasaki and Noritaka Koizumi in the M15 Yanagawa City, Main Draw, originally scheduled for October 28, 2026 at 9:00PM ET. This market will resolve to 'Jumpei Yamasaki' if Jumpei Yamasaki advances against Noritaka Koizumi. This market will resolve to 'Noritaka Koizumi' if Noritaka Koizumi advances against Jumpei Yamasaki. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 11, 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 Jumpei Yamasaki and Noritaka Koizumi in the M15 Yanagawa City, Main Draw, originally scheduled for October 28, 2026 at 9:00PM ET. This market will resolve to 'Jumpei Yamasaki' if Jumpei Yamasaki advances against Noritaka Koizumi. This market will resolve to 'Noritaka Koizumi' if Noritaka Koizumi advances against Jumpei Yamasaki. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 11, 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, often differing from initial sportsbook lines. Sportsbooks set odds based on their own models and aim to balance action on both sides, while this market aggregates the beliefs of many individual traders. If a significant number of traders believe a sportsbook has mispriced a player’s chances, the odds on Polymarket will adjust accordingly. It's common to see prediction markets outperform traditional sportsbooks, especially as the event approaches and more information is factored in by market participants.
This market resolves around Nov 5, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The official results of the Yanagawa City M15 match will be used to determine the winning player. The platform will verify the results against established sports data sources to ensure accuracy. Traders holding shares in the winning player will be entitled to a payout based on the final market price at the time of resolution. It’s important to monitor the event closely as the resolution date approaches.
Several factors could influence the price of shares in this market. Any news regarding player injuries, changes in playing conditions, or updates on player form could significantly shift trader sentiment. Unexpected results in preceding matches or tournaments involving either Jumpei Yamasaki or Noritaka Koizumi could also impact the market. Furthermore, major weather events potentially affecting the match schedule or court conditions may also cause fluctuations. Monitoring these signals will be key to understanding potential shifts in this market before it resolves.