TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 22, 4:58 AM EST
Polymarket
This market refers to the tennis match between Ya Yi Yang and Jizelle Sibai in the ITF Women Brisbane, originally scheduled for July 21, 2026 at 11:00PM ET. This market will resolve to 'Ya Yi Yang' if Ya Yi Yang advances against Jizelle Sibai. This market will resolve to 'Jizelle Sibai' if Jizelle Sibai advances against Ya Yi Yang. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 Ya Yi Yang and Jizelle Sibai in the ITF Women Brisbane, originally scheduled for July 21, 2026 at 11:00PM ET. This market will resolve to 'Ya Yi Yang' if Ya Yi Yang advances against Jizelle Sibai. This market will resolve to 'Jizelle Sibai' if Jizelle Sibai advances against Ya Yi Yang. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 and traditional sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and protect their margin, while prediction markets aggregate the collective belief of traders who profit or lose based on accuracy. For this market, prediction market prices may respond faster to breaking news or shift more sharply if informed traders detect value. Comparing the two can reveal where consensus differs, though each serves a distinct purpose in the broader betting ecosystem.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time probability quotes. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Shares representing each outcome trade continuously, and the current price reflects the aggregate willingness of buyers and sellers. As more capital flows into one outcome, its price rises and the opposing outcome's price falls, creating a self-balancing mechanism. This design encourages liquidity and allows traders to enter or exit positions at transparent, market-determined rates throughout the event window.
This market resolves around Jul 29, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result—whether Yang or Sibai wins the ITF Brisbane encounter. Resolution typically occurs within hours of the final point, pending confirmation from the tournament organizers or recognized tennis databases. Traders should monitor official ITF channels and reputable sports news sources for timely updates as the resolution date approaches.
Several factors may shift odds before the match takes place. Player injury announcements, recent performance trends, or changes in ranking or seeding can trigger rapid repricing. Court surface conditions, weather forecasts, and head-to-head history between Yang and Sibai often influence trader positioning. News about either player's form, coaching changes, or tournament draws may also spark volatility. Additionally, large trades by informed participants can move prices sharply, so monitoring both player-specific developments and order flow patterns helps anticipate market swings.