Cincinnati Open: Joao Fonseca vs Christopher O'Connell

Q: Cincinnati Open: Joao Fonseca vs Christopher O'Connell

Prediction markets currently price this at 78%. A YES share costs 78.0¢ and pays $1 if it happens. That is a return of 28.2% over 8d.

Cincinnati Open: Joao Fonseca vs Christopher O'Connell$17k liquidity$58 volumecloses 8d

TennisSportsGames

Trade on Polymarket

BUY YES

Cost: 78.0¢
Implied chance: 78.0%
Return if right: 28.2%
Spread cost: 8%

If you put in $100

You get 128.2 shares at 78.0¢ each.

YES wins: $128.21 back, a profit of $28.21. YES loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $2.51 of that profit. Without it you would make $30.72.

Assumes the whole order fills at this price. A large order eats into the book and averages worse.

Buy YES on Polymarket

BUY NO

Cost: 25.0¢
Implied chance: 25.0%
Return if right: 300.0%
Spread cost: 8%

If you put in $100

You get 400.0 shares at 25.0¢ each.

NO wins: $400.00 back, a profit of $300.00. NO loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $25.53 of that profit. Without it you would make $325.53.

Assumes the whole order fills at this price. A large order eats into the book and averages worse.

Buy NO on Polymarket

Chance over time

1H 6H 1D 1W 1M ALL

Latest: Aug 17, 06:28 AM4 further outcomes not shown

Latest news

headlines link to their publishers

Headlines are matched on the names in “Cincinnati Open: Joao Fonseca vs Christopher O'Connell”. Nobody checks them by hand, so one may not be relevant. They also say nothing about whether the price has already moved on this news.

How this market resolves

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.

Source: https://www.atptour.com/en/scores/current