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 16, 5:00 AM EST
Polymarket
This market refers to the tennis match between Ioannis Xilas and Lasse Poertner in the ITF Men Kassel, originally scheduled for July 9, 2026 at 5:00AM ET. This market will resolve to 'Ioannis Xilas' if Ioannis Xilas advances against Lasse Poertner. This market will resolve to 'Lasse Poertner' if Lasse Poertner advances against Ioannis Xilas. 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 Ioannis Xilas and Lasse Poertner in the ITF Men Kassel, originally scheduled for July 9, 2026 at 5:00AM ET. This market will resolve to 'Ioannis Xilas' if Ioannis Xilas advances against Lasse Poertner. This market will resolve to 'Lasse Poertner' if Lasse Poertner advances against Ioannis Xilas. 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 sportsbook odds often diverge because they reflect different incentive structures. Sportsbooks set odds to balance their book and lock in profit margins, while prediction markets like this one are driven purely by trader supply and demand. This market aggregates the beliefs of many independent participants without a built-in house edge, which can sometimes yield more efficient pricing than traditional betting venues. However, sportsbook odds benefit from professional oddsmakers and real-time adjustment, so comparing both sources provides a fuller picture of where the smart money stands.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome has a price between 0 and 100 cents, reflecting the implied probability that Xilas or Poertner wins. As traders place orders, the price adjusts dynamically based on supply and demand, ensuring the market continuously reprices itself. This mechanism encourages arbitrage and information discovery, allowing prices to converge toward true probabilities as new information emerges closer to match day.
This market resolves around Jul 16, 2026, once the ITF Kassel match concludes and the result is verifiable from credible public sources. The outcome will be confirmed based on the official match result—whether Xilas or Poertner emerges victorious. Traders holding shares in the winning outcome will receive their payout, while losing positions expire worthless. Resolution typically occurs within hours of the final point, ensuring timely settlement and allowing participants to move capital to the next opportunity.
Several factors could shift odds before the match begins. Recent player form, head-to-head records, and injury updates are key catalysts that traders monitor closely. Court conditions at the Kassel venue, weather forecasts, and any last-minute lineup changes can also trigger repricing. News coverage, expert commentary, and betting activity on traditional sportsbooks often flow into prediction markets, amplifying moves. As the match date approaches, any public statements from either player or coaching staff may influence trader sentiment and push prices in either direction.