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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell | 50% | −29 pts | — | 50¢ · 51¢ (1¢) | — | ended |
| Completed Match | 0% | −50 pts | — | — · 1¢ | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 1 Winner | 50% | −14 pts | — | 50¢ · 51¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set Handicap +/-1.5 | 50% | −2 pts | — | 50¢ · 51¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Total Sets: O/U 2.5 | 50% | +16 pts | — | 49¢ · 50¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Match O/U 22.5 | 50% | +6 pts | — | 49¢ · 50¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Match O/U 23.5 | 50% | +11 pts | — | 49¢ · 50¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Match O/U 21.5 | 50% | +1 pts | — | 50¢ · 51¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 2 Winner | 50% | −14 pts | — | 50¢ · 51¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 1 O/U 8.5 | 50% | +1 pts | — | 50¢ · 51¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 1 O/U 10.5 | 50% | — | — | 49¢ · 50¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 1 O/U 9.5 | 50% | +1 pts | — | 50¢ · 51¢ (1¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 2 O/U 8.5 | 50% | +1 pts | — | 49¢ · 51¢ (2¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 2 O/U 9.5 | 50% | +1 pts | — | 49¢ · 51¢ (2¢) | — | ended |
| Cincinnati Open: Joao Fonseca vs Christopher O'Connell Set 2 O/U 10.5 | 50% | +1 pts | — | 49¢ · 51¢ (2¢) | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 67d |  riggggggedGGGGr | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyJoao Fonseca51¢ → 50¢ | $3,389 | −$66 −2.0% | 4 |
| 67d | juanjoc98 | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | SellJoao Fonseca50¢ | $7,342 | $0 0.0% | — |
| 67d | RDXR | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyChristopher OConnell50¢ | $3,179 | — | 4 |
| 67d | juanjoc984 fills | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyJoao Fonseca51¢ → 50¢ | $7,489 | −$147 −2.0% | 4 |
| 67d | omnibus-076daa | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyJoao Fonseca51¢ → 50¢ | $1,120 | −$22 −2.0% | 4 |
| 67d | drrd | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyJoao Fonseca51¢ → 50¢ | $5,000 | −$98 −2.0% | 4 |
| 67d | 0xKhazar | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyJoao Fonseca51¢ → 50¢ | $1,836 | −$36 −2.0% | 4 |
| 67d | brunomedm | Completed Match | BuyNo98¢ → 100¢ | $3,759 | +$69 +1.8% | 4 |
| 67d | kingflop | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyJoao Fonseca51¢ → 50¢ | $2,914 | −$57 −2.0% | 4 |
| 67d | 12345432 | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyChristopher OConnell24¢ | $1,103 | — | 4 |
| 67d | Stavenson2 fills | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyChristopher OConnell22¢ | $8,833 | — | 4 |
| 67d | k56 | Cincinnati Open: Joao Fonseca vs Christopher O'Connell | BuyJoao Fonseca81¢ → 50¢ | $4,000 | −$1,531 −38% | 4 |
This market refers to the tennis match between Joao Fonseca and Christopher O'Connell in the Cincinnati Open, originally scheduled for August 18, 2026 at 10:00AM ET. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Christopher O'Connell. This market will resolve to 'Christopher O'Connell' if Christopher O'Connell advances against Joao Fonseca. 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 ATP Tour. 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: 50¢ for Cincinnati Open: Joao Fonseca vs Christopher O'Connell means the market gives it about 50%.