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%
Completed Match
- Polymarket
Completed Match - Polymarket
1W
News
Positive
Negative
Neutral
Hover marker for details
Vol.
·
Resolved Sep 24, 2026
Closed: Sep 24, 3:35 AM EST
Polymarket
This market refers to the tennis match between Natsumi Kawaguchi and Sayaka Ishii in the W50 Nanao, Main Draw, originally scheduled for September 23, 2026 at 10:00PM ET. This market will resolve to 'Natsumi Kawaguchi' if Natsumi Kawaguchi advances against Sayaka Ishii. This market will resolve to 'Sayaka Ishii' if Sayaka Ishii advances against Natsumi Kawaguchi. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 7, 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 Natsumi Kawaguchi and Sayaka Ishii in the W50 Nanao, Main Draw, originally scheduled for September 23, 2026 at 10:00PM ET. This market will resolve to 'Natsumi Kawaguchi' if Natsumi Kawaguchi advances against Sayaka Ishii. This market will resolve to 'Sayaka Ishii' if Sayaka Ishii advances against Natsumi Kawaguchi. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 7, 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 wisdom of the crowd, potentially differing from those set by sportsbooks. Sportsbooks establish initial lines based on their own analysis, aiming to balance action on both sides, while this market allows anyone to express their belief about the outcome. If a significant number of traders believe a sportsbook’s odds are inaccurate, they can take the opposite position in this market, driving the price to reflect their collective view. Discrepancies can arise due to differing information or interpretations of the players’ form and potential strategies.
On Polymarket, this market is priced through a continuous auction mechanism. Traders buy and sell shares representing their belief in the outcome of the Kawaguchi vs Ishii match. The price of these shares fluctuates based on supply and demand, with higher prices indicating greater confidence in that outcome. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price movements reflect the aggregated predictions of all participants, creating a dynamic and real-time assessment of the event's probability. The current price represents the market's consensus view.
This market resolves around Oct 1, 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 W50 Nanao match between Natsumi Kawaguchi and Sayaka Ishii. The platform will verify the result against publicly available sources to determine which outcome corresponds to the actual event result. Traders holding shares in the winning outcome will be paid out according to the final market price at resolution.
Several factors could influence the price of this market before resolution. Any news regarding player injuries, changes in playing conditions, or significant shifts in public perception could impact trading activity. Unexpected announcements about player strategies or team dynamics could also move the market. Furthermore, major upsets in other related matches or tournaments might influence traders’ assessments of the players’ form and confidence, leading to adjustments in the price of shares in this market.