
Resolved Luca Castelnuovo on 27 Aug 2026.
$38.06K traded over the market's life.
33 wallets still hold shares. Winners redeem theirs after settlement, so what is left is mostly the losing side.
Polymarket record as of Aug 28, 5:01 AM UTC
Daily closes of the Hiromasa Koyama price, Polymarket CLOB, 1 point, 27 Aug 2026, chart shows 24%–36%
| Observed | Hiromasa Koyama price |
|---|---|
| 27 Aug 2026 | 30.5% |
Winners have redeemed their shares, so most of what is left is the losing side.
| Trader | Outcome | Shares |
|---|---|---|
| kkookkoo | Hiromasa Koyama | 5K |
| 00XyXyzzyxzzqyej233j2j32h4h35 | Hiromasa Koyama | 4.75K |
| avotrade | Hiromasa Koyama | 2.47K |
| FlobzzBets | Hiromasa Koyama | 216.11 |
| mamofaker24 | Hiromasa Koyama | 200 |
| d8c6 | Hiromasa Koyama | 128.51 |
| Strict-Gather | Hiromasa Koyama | 70.77 |
| leks1r | Hiromasa Koyama | 67.57 |
| grotevis | Hiromasa Koyama | 66.18 |
| Exciting-Fir | Hiromasa Koyama | 52.79 |
Open a trader’s name to inspect the wallet’s available P&L, positions and recorded trades, with source dates and coverage. A large position alone does not establish a winning track record.
This market refers to the tennis match between Hiromasa Koyama and Luca Castelnuovo in the ITF MEN - SINGLES: M25 Taipei 2 (Taiwan), hard, originally scheduled for August 26, 2026 at 10:00PM ET. This market will resolve to 'Hiromasa Koyama' if Hiromasa Koyama advances against Luca Castelnuovo. This market will resolve to 'Luca Castelnuovo' if Luca Castelnuovo advances against Hiromasa Koyama. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), 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.
Official listing: polymarket.com/event/itf-koyam-caste-2026-08-27
New to prediction markets? How to read a market page