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 20, 3:00 AM EST
Polymarket
This market refers to the tennis match between Katarzyna Kawa and Simona Waltert in the Iasi Open, originally scheduled for July 13, 2026 at 3:00AM ET. This market will resolve to 'Katarzyna Kawa' if Katarzyna Kawa advances against Simona Waltert. This market will resolve to 'Simona Waltert' if Simona Waltert advances against Katarzyna Kawa. 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 WTA Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Katarzyna Kawa and Simona Waltert in the Iasi Open, originally scheduled for July 13, 2026 at 3:00AM ET. This market will resolve to 'Katarzyna Kawa' if Katarzyna Kawa advances against Simona Waltert. This market will resolve to 'Simona Waltert' if Simona Waltert advances against Katarzyna Kawa. 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 WTA Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different participant pools and incentive structures. Sportsbooks set lines to balance action and protect their margin, while prediction markets aggregate trader beliefs through real-money positions. This market's odds may lead or lag sportsbook lines depending on information flow and trader conviction. Comparing the two can reveal where professional bettors and retail traders disagree, though both aim to price the underlying probability of the tennis outcome.
On Polymarket, this market is priced through an automated market maker that converts trader positions into real-time odds. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price reflects the cumulative bets placed on each outcome, with larger positions moving the odds more sharply. Traders buy or sell shares representing each possible result, and the contract price directly corresponds to the implied probability. As new information emerges or sentiment shifts, the market reprices instantly, allowing participants to enter or exit positions at transparent, continuously updated rates.
This market resolves around Jul 20, 2026, once the tennis match concludes and the result is verifiable from credible public sources. The outcome is determined by the official match result—either Kawa or Waltert will be confirmed as the winner based on the final score. Resolution occurs after the event is complete and the winner is publicly announced by the tournament organizers or recognized sports data providers. Traders holding the winning outcome receive their payout once verification is complete.
Several factors can shift odds before the match concludes. Player injury reports, recent form and head-to-head records, court surface conditions, and weather forecasts are key catalysts. Betting action from sharp traders or sudden news coverage can also trigger rapid repricing. Odds may tighten or widen based on lineup confirmations, player statements, or shifts in public perception closer to match day. Real-time match developments—such as early set results if live betting is enabled—can further influence trader positioning and market prices.