TOTAL VOLUME:
$154.4b
24H VOL:
$290,393,159
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,944,100,805
420,493
Markets across
40,511
events
MATCHED EVENTS:
4,612
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 20, 2:47 AM EST
Polymarket
This market refers to the tennis match between Oleksandra Oliynykova and Mary Stoiana in the Japan Women's Open, originally scheduled for October 19, 2026 at 9:00PM ET. This market will resolve to 'Oleksandra Oliynykova' if Oleksandra Oliynykova advances against Mary Stoiana. This market will resolve to 'Mary Stoiana' if Mary Stoiana advances against Oleksandra Oliynykova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 2, 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 WTA Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Oleksandra Oliynykova and Mary Stoiana in the Japan Women's Open, originally scheduled for October 19, 2026 at 9:00PM ET. This market will resolve to 'Oleksandra Oliynykova' if Oleksandra Oliynykova advances against Mary Stoiana. This market will resolve to 'Mary Stoiana' if Mary Stoiana advances against Oleksandra Oliynykova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 2, 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 WTA Tour. A consensus of credible reporting may also be used.
Often, prediction market odds reflect a wisdom-of-the-crowd effect, potentially differing from traditional sportsbook odds. Sportsbooks set lines based on their own models and to balance action, while this market represents the collective belief of traders. Discrepancies can arise due to differing information, biases, or simply the dynamics of how each venue operates. If there’s a significant difference, it might suggest that the market perceives something differently than the sportsbooks, or that one venue has more informed traders focused on this event. It’s always useful to compare both to form your own informed opinion.
This market resolves around Oct 27, 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 Japan Women's Open tennis match between Oleksandra Oliynykova and Mary Stoiana, as declared by the tournament organizers. The winning player will determine the outcome of this market. Traders will be able to claim their winnings once the result is officially confirmed and reported, and shares will be settled accordingly.
Several factors could influence the price of this market before Oct 27, 2026. Any news regarding player injuries, changes in playing conditions, or updated rankings could shift trader sentiment. Unexpected results in other matches leading up to this one might also impact perceptions of the players’ form and confidence. Furthermore, significant betting activity or large trades on Polymarket could cause noticeable price movements. Monitoring tennis news and following the players’ performance in the lead-up to the match are key indicators to watch.