TOTAL VOLUME:
$154.7b
24H VOL:
$279,496,801
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,923,931,766
416,910
Markets across
40,107
events
MATCHED EVENTS:
4,571
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 12, 3:05 PM EST
Polymarket
This market refers to the tennis match between Isadora Sigrist and Lais Mika Shibata in the W15 Maceio, Qualifying, originally scheduled for October 12, 2026 at 10:00AM ET. This market will resolve to 'Isadora Sigrist' if Isadora Sigrist advances against Lais Mika Shibata. This market will resolve to 'Lais Mika Shibata' if Lais Mika Shibata advances against Isadora Sigrist. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 26, 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 Isadora Sigrist and Lais Mika Shibata in the W15 Maceio, Qualifying, originally scheduled for October 12, 2026 at 10:00AM ET. This market will resolve to 'Isadora Sigrist' if Isadora Sigrist advances against Lais Mika Shibata. This market will resolve to 'Lais Mika Shibata' if Lais Mika Shibata advances against Isadora Sigrist. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 26, 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 initial lines based on their own analysis, while this market allows anyone to trade on their predictions. If a significant number of people believe a sportsbook has mispriced an outcome, the prediction market odds may move in the opposite direction. It’s common to see discrepancies, especially before a lot of information is available or when there's strong public sentiment about the Sigrist vs Shibata match. Examining both can provide a more comprehensive view.
On Polymarket, this market is priced through a continuous trading mechanism where users buy and sell shares representing their belief in the outcome of the Sigrist vs Shibata match. The price of these shares directly reflects the implied probability of each player winning. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information emerges, the price adjusts to reflect the collective assessment. The market’s price is determined solely by supply and demand within Polymarket, responding to information and opinions about the players’ form and potential performance.
This market resolves around Oct 19, 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 W15 Maceio match between Isadora Sigrist and Lais Mika Shibata. The platform will verify the winner based on publicly available and authoritative sources. Traders who correctly predicted the outcome will be paid out according to the final share price at the time of resolution. It’s important to monitor the event closely as the resolution date approaches.
Several factors could influence trading activity in this market before Oct 19, 2026. Any news regarding player injuries, changes in playing conditions, or updated rankings could shift trader sentiment. Unexpected announcements about either Isadora Sigrist or Lais Mika Shibata’s preparation or fitness levels would likely cause price fluctuations. Furthermore, general tennis news and analysis, or even significant shifts in public opinion, could impact the volume and price of shares in this market. Monitoring these signals will be key to understanding potential movements.