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 30, 4:26 PM EST
Polymarket
This market refers to the tennis match between Katherine Sebov and Madison Sieg in the W75 Toronto, Main Draw, originally scheduled for October 30, 2026 at 11:00AM ET. This market will resolve to 'Katherine Sebov' if Katherine Sebov advances against Madison Sieg. This market will resolve to 'Madison Sieg' if Madison Sieg advances against Katherine Sebov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 13, 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 Katherine Sebov and Madison Sieg in the W75 Toronto, Main Draw, originally scheduled for October 30, 2026 at 11:00AM ET. This market will resolve to 'Katherine Sebov' if Katherine Sebov advances against Madison Sieg. This market will resolve to 'Madison Sieg' if Madison Sieg advances against Katherine Sebov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 13, 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, and can differ from traditional sportsbook odds due to varying information sources and incentives. Sportsbooks set lines based on their own models and to balance action, while this market aggregates the beliefs of many individual traders. It's common to see discrepancies, especially early in the market's life cycle, as prediction markets can quickly incorporate new information and react to changes in sentiment. Analyzing these differences can be a valuable exercise for informed bettors and traders.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the outcome of the Sebov vs Sieg match. The price of a share directly corresponds to the implied probability of that outcome occurring. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more people trade, the price adjusts to reflect the collective assessment of the crowd. The market's depth—the number of shares available to buy or sell at different price points—indicates the level of confidence and potential for price swings.
This market resolves around Nov 6, 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 Sebov vs Sieg match as declared by the official tournament organizers. The platform will verify the result against publicly available sources to ensure accuracy and transparency. Traders holding shares in the winning outcome will receive a payout equivalent to 1 minus the commission, while shares in the losing outcome will be worth nothing.
Several factors could influence the price of shares in this market before the Nov 6, 2026 resolution. Any news regarding player form, injuries, or changes in playing conditions could significantly shift trader sentiment. Unexpected announcements about the players’ strategies or coaching changes might also play a role. Furthermore, major shifts in public opinion, as reflected in betting odds or sports news coverage, could impact trading activity and, consequently, the price of shares. Monitoring these signals will be key to understanding potential market movements.