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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Yes | 100% | +5 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 421d |  bo0xts | US Open: Jannik Sinner vs Alexei Popyrin | SellSinner>99¢ | $1,055 | −$1 −0.1% | — |
| 421d |  Spoddo | US Open: Jannik Sinner vs Alexei Popyrin | SellSinner>99¢ | $2,079 | −$2 −0.1% | — |
| 421d | nbapro2 fills | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner99¢ → 100¢ | $6,481 | +$34 +0.5% | 4 |
| 421d |  okalright | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner99¢ → 100¢ | $1,708 | +$25 +1.5% | 4 |
| 421d | Pladimirvutin | US Open: Jannik Sinner vs Alexei Popyrin | SellSinner97¢ → 100¢ | $1,016 | −$32 −3.2% | — |
| 421d |  johannsi19 | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner97¢ → 100¢ | $1,183 | +$39 +3.3% | 4 |
| 421d | 025d4 fills | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner97¢ → 100¢ | $22,318 | +$711 +3.2% | 4 |
| 421d | bo0xts | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner96¢ → 100¢ | $1,015 | +$42 +4.1% | 4 |
| 421d | Spoddo | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner96¢ → 100¢ | $1,500 | +$63 +4.2% | 4 |
| 421d | Pavelevel | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner96¢ → 100¢ | $5,000 | +$210 +4.2% | 4 |
| 422d | Occasionalbettor | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner96¢ → 100¢ | $1,140 | +$48 +4.2% | 4 |
| 422d | 5551ab | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner97¢ → 100¢ | $8,153 | +$252 +3.1% | 4 |
| 422d | Bukaj0889 | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner97¢ → 100¢ | $2,000 | +$62 +3.1% | 4 |
| 422d |  matchpointmoney | US Open: Jannik Sinner vs Alexei Popyrin | BuySinner97¢ → 100¢ | $1,000 | +$31 +3.1% | 4 |
This is a polymarket on the tennis match between Jannik Sinner and Alexei Popyrin in the 2025 US Open men's singles second round, scheduled for August 28, 2025. This market will resolve to 'Sinner' if Jannik Sinner advances against Alexei Popyrin. This market will resolve to 'Popyrin' if Alexei Popyrin advances against Jannik Sinner. If the match is canceled (not played at all), ends in a tie, or is delayed beyond September 4, 2025 without a winner determined, this market will resolve to 50-50. If the match ends in a walkover (one player withdraws before the start and the other advances automatically), this market will resolve in favor of the player who officially advances to the next round. The primary resolution source will be official information from the US Open. A consensus of credible reporting may also be used.
Sources: Polymarket's Gamma API, its CLOB price history and its Data API, read every two minutes. Prices are each outcome's Yes price, which is the market's probability: 100¢ for Yes means the market gives it about 100%.