About This Market
Seiya Nakanishi vs.
Seiya Nakanishi vs. Kazushi Idogaki: ITF Men's World Tennis Tour match held on 2026-09-08. Review the historical prediction market odds from Kalshi and Polymarket on Prediction Hunt.
Live prediction market odds for Seiya Nakanishi vs. Kazushi Idogaki. Compare prices across Kalshi and Polymarket US and Polymarket.

ITF Men·Resolved 2026-09-08
This market resolved on 2026-09-08. Seiya Nakanishi was the officially declared outcome. Prior to resolution, the market peaked at 100%.
Seiya Nakanishi vs.
Seiya Nakanishi vs. Kazushi Idogaki: ITF Men's World Tennis Tour match held on 2026-09-08. Review the historical prediction market odds from Kalshi and Polymarket on Prediction Hunt.
| Candidate | ![]() | ![]() | ![]() |
|---|---|---|---|
Seiya NakanishiWINNER | 100% | 84% | 100% |
Kazushi Idogaki | 19% | 16% | 0% |
Seiya Nakanishi
94.5% avg
Official settlement criteria, resolution sources, and edge cases across Polymarket US.
Polymarket USThis market will settle to the winner of the Kazushi Idogaki vs Seiya Nakanishi ITF match scheduled for Sep 8, 2026. If the match does not begin due to a walkover, withdrawal, or cancellation, the market will settle to $0.50. If the match is delayed, postponed, or suspended and not rescheduled to a date within two weeks of the originally scheduled date, the market will settle to $0.50. Outcome sourced from ITF.
The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US, Polymarket in one place. Each price reflects the market’s implied probability, not a guaranteed result. This event is archived; prices shown are historical.
The last available prices are Seiya Nakanishi: 99.5¢ on Kalshi, 99.9¢ on Polymarket, 84.0¢ on Polymarket US; Kazushi Idogaki: 18.5¢ on Kalshi, 0.1¢ on Polymarket, 16.0¢ on Polymarket US. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity. The last available price is not necessarily the final settlement price.
The largest price difference shown across venues is 18.4 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.
For example, Seiya Nakanishi at 94.5¢ implies about a 94.5% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading. Historical prices alone do not identify the winning outcome.