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: Sep 21, 5:40 AM EST
Polymarket
This market refers to the tennis match between Ayumi Miyamoto and Maiko Uchijima in the W50 Nanao, Qualifying, originally scheduled for September 21, 2026 at 12:00AM ET. This market will resolve to 'Ayumi Miyamoto' if Ayumi Miyamoto advances against Maiko Uchijima. This market will resolve to 'Maiko Uchijima' if Maiko Uchijima advances against Ayumi Miyamoto. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 5, 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 Ayumi Miyamoto and Maiko Uchijima in the W50 Nanao, Qualifying, originally scheduled for September 21, 2026 at 12:00AM ET. This market will resolve to 'Ayumi Miyamoto' if Ayumi Miyamoto advances against Maiko Uchijima. This market will resolve to 'Maiko Uchijima' if Maiko Uchijima advances against Ayumi Miyamoto. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 5, 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.
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 these shares fluctuates based on supply and demand, effectively creating a real-time probability assessment. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more people trade, the price converges towards what the market believes is the true probability of each player winning the W50 Nanao tennis match. The current price reflects the aggregated predictions of all participants on Polymarket.
This market resolves around Sep 28, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the W50 Nanao tennis match between Ayumi Miyamoto and Maiko Uchijima. The platform will verify the winner against official tournament results and standings. Traders who correctly predicted the outcome will be paid out according to the final share prices at the time of resolution, while those who predicted incorrectly will forfeit their shares.
Several factors could influence the trading activity in this market before the match concludes. News regarding player injuries, changes in weather conditions affecting play, or even significant shifts in public sentiment could all cause the odds to shift. Unexpected performance in earlier rounds of the tournament, or analysis suggesting a tactical advantage for one player, could also drive trading volume and price changes. Any updates that alter perceptions of the players' chances of winning the W50 Nanao tennis match are likely to impact this market.