TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 16, 11:00 AM EST
Polymarket
This market refers to the doubles tennis match between Bayerlova/Feng and Linana/Osborne in the Contrexeville, originally scheduled for July 9, 2026 at 11:00AM ET. This market will resolve to 'Bayerlova/Feng' if the team of Bayerlova/Feng advances against Linana/Osborne. This market will resolve to 'Linana/Osborne' if the team of Linana/Osborne advances against Bayerlova/Feng. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 doubles tennis match between Bayerlova/Feng and Linana/Osborne in the Contrexeville, originally scheduled for July 9, 2026 at 11:00AM ET. This market will resolve to 'Bayerlova/Feng' if the team of Bayerlova/Feng advances against Linana/Osborne. This market will resolve to 'Linana/Osborne' if the team of Linana/Osborne advances against Bayerlova/Feng. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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.
Prediction market odds and sportsbook odds often diverge because they operate under different incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets are driven by trader consensus and real-money stakes. This market aggregates beliefs from thousands of participants who profit by accurately forecasting the outcome, creating a dynamic pricing mechanism. Sportsbooks may lag behind prediction markets in reflecting breaking news or sharp analytical insights, since traders on platforms like Polymarket can adjust positions instantly. Comparing the two reveals which venue perceives greater uncertainty or has incorporated the latest information about player conditions and matchup dynamics.
On Polymarket, traders set prices through an automated market maker mechanism where buying or selling shares shifts the odds in real time. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome—a win for Bayerlova/Feng or a win for Linana/Osborne—is represented as a tradable contract, and the combined probability of all outcomes equals 100 percent. Prices reflect the marginal cost of the next share purchased, incentivizing arbitrage when mispricing occurs. Liquidity pools and trader participation determine how tightly prices cluster around fair value. As match day approaches and new information surfaces, prices adjust rapidly to incorporate updated expectations about player performance and match conditions.
This market resolves around Jul 16, 2026, once the Contrexeville women's doubles tennis event concludes and the result is verifiable from credible public sources. The outcome is determined by which pairing wins the match—either Bayerlova/Feng or Linana/Osborne. Traders holding shares in the winning outcome receive their payout, while those on the losing side forfeit their stake. Resolution typically occurs within hours of the final point, pending confirmation from official tournament records or reputable sports data providers. Early resolution is possible if one team withdraws or the match is cancelled, though such scenarios are rare in professional tennis.
Several catalysts could shift odds before the match begins. Injury announcements or withdrawal news involving any of the four players would trigger sharp repricing. Recent tournament results and head-to-head records between the pairings serve as key reference points; a strong performance by either team in warm-up events could sway trader sentiment. Weather forecasts matter in tennis, as surface conditions and temperature affect play style and fatigue. Betting syndicates or sharp money entering the market can signal informed conviction, prompting retail traders to follow. Media coverage highlighting player form, coaching changes, or tactical adjustments also influences perception. Close to match time, late-breaking fitness updates or court assignments may create final volatility.