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: Jun 5, 9:00 PM EST
Polymarket
This market refers to the tennis match between Hiromasa Koyama and Jake Delaney in the ITF Men Karuizawa, originally scheduled for May 29, 2026 at 9:00PM ET. This market will resolve to 'Hiromasa Koyama' if Hiromasa Koyama advances against Jake Delaney. This market will resolve to 'Jake Delaney' if Jake Delaney advances against Hiromasa Koyama. 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 on Polymarket for this ITF Karuizawa match often reflect real-time crowd sentiment and may diverge from traditional sportsbook lines. While sportsbooks employ professional oddsmakers and adjust lines to balance liability, prediction markets aggregate the collective beliefs of traders with financial incentives. For the Koyama versus Delaney matchup, comparing Polymarket implied probabilities to major sportsbook offerings can reveal whether the crowd is more bullish or bearish on either player. These differences typically narrow closer to match time as information converges.
The ITF Karuizawa: Hiromasa Koyama vs Jake Delaney market is scheduled to resolve on Jun 6, 2026. Resolution is determined by the official result of the completed match between these two players at the ITF Karuizawa tournament. The market will settle based on which player wins the match, with the outcome verified through official ITF records and tournament documentation. Once the match concludes and the result is confirmed, the prediction market will automatically resolve to reflect the winner.
Several factors could shift market odds for Koyama versus Delaney before the match. Recent tournament results, player rankings updates, and head-to-head record releases may influence trader positioning. Injury announcements or withdrawal news would dramatically reprrice the market. Court surface conditions at Karuizawa, weather forecasts, and player form leading into the event all serve as catalysts. Media coverage highlighting either player's recent performance or tactical advantages can also move prices. Trading volume spikes often accompany these information events, creating volatility in the implied probabilities on Polymarket.