TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 23, 8:00 AM EST
Polymarket
This market refers to the tennis match between Lasse Poertner and Niklas Guttau in the ITF Men Uslar, originally scheduled for July 16, 2026 at 8:00AM ET. This market will resolve to 'Lasse Poertner' if Lasse Poertner advances against Niklas Guttau. This market will resolve to 'Niklas Guttau' if Niklas Guttau advances against Lasse Poertner. 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 Lasse Poertner and Niklas Guttau in the ITF Men Uslar, originally scheduled for July 16, 2026 at 8:00AM ET. This market will resolve to 'Lasse Poertner' if Lasse Poertner advances against Niklas Guttau. This market will resolve to 'Niklas Guttau' if Niklas Guttau advances against Lasse Poertner. 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 margins, while prediction markets aggregate the beliefs of traders who have direct financial exposure to accuracy. For this market, comparing the current prediction market price to major sportsbook lines can reveal whether one venue perceives higher or lower probability than the other, helping you identify potential value or consensus shifts in how the tennis community is evaluating the matchup.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, this market is priced through an automated market maker that converts trader buy and sell orders into real-time probabilities. As more capital flows toward one outcome, the price adjusts continuously to reflect the collective forecast. The current price represents the marginal trader's belief about the likelihood of the result, and historical price data shows how conviction has evolved as new information or player updates have surfaced.
This market resolves around Jul 23, 2026, once the ITF Uslar match between the two players concludes and the result is verified against credible public sources. The outcome is determined by the official match result—which player wins the contest. Until that point, traders can continue to buy and sell positions as odds shift based on pre-match news, player form, or betting sentiment. Resolution is automatic once the event is confirmed through established sports reporting channels.
Several factors could shift this market materially before Jul 23, 2026. Player injury reports, recent tournament performance, head-to-head history, or changes in seeding can all influence trader positioning. Court surface conditions, weather forecasts, and late-breaking news about either competitor's form or fitness may trigger repricing. Additionally, large trades or shifts in aggregate trader conviction can move the odds as new money enters or exits the market, so monitoring both the players and the market flow itself is valuable for tracking momentum.