TOTAL VOLUME:
$134.2b
24H VOL:
$126,590,312
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,439,516,703
404,175
Markets across
30,277
events
MATCHED EVENTS:
2,685
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 17, 11:15 PM EST
Polymarket
This market refers to the tennis match between Eri Shimizu and Nanari Katsumi in the ITF Women Tokyo, originally scheduled for June 10, 2026 at 11:15PM ET. This market will resolve to 'Eri Shimizu' if Eri Shimizu advances against Nanari Katsumi. This market will resolve to 'Nanari Katsumi' if Nanari Katsumi advances against Eri Shimizu. 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 often diverge from traditional sportsbook lines because they reflect real-time crowd sentiment rather than fixed bookmaker margins. Sportsbooks typically build in a 4–5% vig and adjust lines to balance action, while prediction markets price outcomes based on continuous trader participation. For the Shimizu vs Katsumi ITF Tokyo match, comparing Polymarket probabilities to major sportsbook odds can reveal whether the crowd is more or less confident than professional oddsmakers. Prediction markets often react faster to breaking news like injuries or player form shifts.
The ITF Tokyo: Eri Shimizu vs Nanari Katsumi prediction market resolves on Jun 18, 2026. Resolution is determined by the official result of the match as reported by the ITF and confirmed by the market's data source. The outcome is binary: one player wins and the other loses. No draws or voids are applicable in professional tennis singles competition. Once the match concludes and the result is officially recorded, the market settles automatically and traders receive payouts based on their positions.
Several catalysts could shift odds for the Shimizu vs Katsumi ITF Tokyo match. Recent tournament results, player rankings updates, and head-to-head record announcements often trigger repricing. Injury reports or withdrawal news would have immediate impact. Court surface preference, weather conditions on match day, and player form in the weeks leading up to the event all influence trader positioning. Media coverage highlighting one player's recent wins or losses, coaching changes, or equipment adjustments can also move the market. Real-time match momentum during play may drive final adjustments before resolution on Jun 18, 2026.