TOTAL VOLUME:
$154.3b
24H VOL:
$219,029,434
24H TRANSACTIONS:
2,984,028,936
OPEN INTEREST:
$1,869,293,526
411,051
Markets across
40,408
events
MATCHED EVENTS:
4,377
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 23, 7:55 AM EST
Polymarket
This market refers to the tennis match between Lea Sabadi and Mia Horvit in the W15 Bol, Main Draw, originally scheduled for October 21, 2026 at 4:30AM ET. This market will resolve to 'Lea Sabadi' if Lea Sabadi advances against Mia Horvit. This market will resolve to 'Mia Horvit' if Mia Horvit advances against Lea Sabadi. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 4, 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 Lea Sabadi and Mia Horvit in the W15 Bol, Main Draw, originally scheduled for October 21, 2026 at 4:30AM ET. This market will resolve to 'Lea Sabadi' if Lea Sabadi advances against Mia Horvit. This market will resolve to 'Mia Horvit' if Mia Horvit advances against Lea Sabadi. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 4, 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 collective wisdom of a diverse group of forecasters, potentially differing from sportsbook odds which may be influenced by factors like house bias or public perception. While sportsbooks set initial lines to balance betting action, this market allows traders to continuously update their assessments based on new information. It's common to see discrepancies between the two, as prediction markets can incorporate a wider range of data and perspectives than traditional sportsbooks. Examining these differences can provide valuable insights into the perceived probabilities of various outcomes.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the likelihood of each outcome. The price of a share directly corresponds to the implied probability of that outcome occurring. As more traders participate, the prices adjust to reflect the collective assessment of the group. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The more shares purchased for a particular outcome, the higher its price rises, and vice versa, creating a dynamic and responsive pricing system. This allows the market to quickly incorporate new information and adjust probabilities accordingly.
This market resolves around Oct 28, 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 Lea Sabadi vs Mia Horvit match, as reported by a recognized sports authority. The platform will verify the result against these sources to determine which outcome corresponds to the actual event outcome. Traders who correctly predicted the result will be entitled to a payout based on the final share price at the time of resolution.
Several signals or events could significantly move this market before Oct 28, 2026. Any news regarding player injuries, changes in coaching strategies, or unexpected performance in prior matches could influence trader sentiment. Publicly available analysis from sports experts, pre-match interviews, and even weather conditions could also play a role. A shift in public opinion, reflected in betting patterns on Polymarket, would directly impact the share prices and probabilities. Unexpected announcements related to the players or the event itself are also likely to cause fluctuations in this market.