TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 26, 6:40 PM EST
Polymarket
This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET. This market will resolve to 'Nao Hibino' if Nao Hibino advances against Anna Siskova. This market will resolve to 'Anna Siskova' if Anna Siskova advances against Nao Hibino. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 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 Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET. This market will resolve to 'Nao Hibino' if Nao Hibino advances against Anna Siskova. This market will resolve to 'Anna Siskova' if Anna Siskova advances against Nao Hibino. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 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.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders manually set the odds through buying and selling shares for each possible outcome. The current implied probability reflects the balance of buy and sell orders placed by users. This decentralized pricing mechanism allows rapid adjustments based on news, performance updates, or shifts in betting sentiment, often resulting in prices that diverge from traditional sportsbook odds.
This market resolves around Sep 2, 2026, with the outcome confirmed once the match result is verifiable from credible public reporting. The winner of the Hibino vs Siskova qualifier will be determined on-court, and the platform will update the market accordingly shortly after official results are announced. Timing depends on when the tournament schedule finalizes the match and when authoritative sports news sources confirm the final score.
Injuries, withdrawals, or last-minute changes to player participation can dramatically shift this market. Additionally, any significant performance updates — such as strong recent wins, coaching changes, or updated rankings — may influence trader sentiment. Media coverage highlighting key stats or head-to-head history can also cause rapid price swings as participants reassess their positions leading up to Sep 2, 2026.