TOTAL VOLUME:
$154.8b
24H VOL:
$238,896,186
24H TRANSACTIONS:
2,985,204,718
OPEN INTEREST:
$1,897,934,485
408,127
Markets across
39,552
events
MATCHED EVENTS:
4,429
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 21, 2:00 AM EST
Polymarket
This market refers to the tennis match between Jizelle Sibai and Erika Sema in the W35 Sydney, Main Draw, originally scheduled for October 20, 2026 at 8:00PM ET. This market will resolve to 'Jizelle Sibai' if Jizelle Sibai advances against Erika Sema. This market will resolve to 'Erika Sema' if Erika Sema advances against Jizelle Sibai. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 3, 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 Jizelle Sibai and Erika Sema in the W35 Sydney, Main Draw, originally scheduled for October 20, 2026 at 8:00PM ET. This market will resolve to 'Jizelle Sibai' if Jizelle Sibai advances against Erika Sema. This market will resolve to 'Erika Sema' if Erika Sema advances against Jizelle Sibai. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 3, 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 traditional sportsbook odds. Sportsbooks set lines based on their own models and aim to balance action on both sides, while this market allows anyone to express their belief about the outcome. If a significant discrepancy exists, arbitrage opportunities may arise, where traders can profit by betting on both venues. However, it's important to remember that prediction markets and sportsbooks have different risk profiles and user bases, leading to naturally occurring differences in their assessments.
This market resolves around Oct 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 W35 Sydney match between Jizelle Sibai and Erika Sema. The platform will verify the result against reliable sources to determine the winning outcome. Traders holding shares in the winning outcome will be entitled to a payout, while those holding shares in the losing outcome will receive nothing.
Several factors could influence the price of this market before Oct 28, 2026. Any news regarding player injuries, changes in playing conditions, or even significant shifts in public perception could cause the odds to move. Unexpected announcements about player form or strategic changes could also impact trading activity. Furthermore, large trades by influential market participants could create short-term price fluctuations, reflecting their informed opinions about the Sibai vs Sema match.