Cincinnati Open: Valentin Royer vs Stefanos Tsitsipas

Q: Cincinnati Open: Valentin Royer vs Stefanos Tsitsipas

Prediction markets currently price this at 28%. A YES share costs 28.0¢ and pays $1 if it happens. That is a return of 257.1% over 8d.

Cincinnati Open: Valentin Royer vs Stefanos Tsitsipas$10k liquidity$12 volumecloses 8d

TennisSportsGames

Trade on Polymarket

BUY YES

Cost: 28.0¢
Implied chance: 28.0%
Return if right: 257.1%
Spread cost: 7%

If you put in $100

You get 357.1 shares at 28.0¢ each.

YES wins: $357.14 back, a profit of $257.14. YES loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $20.22 of that profit. Without it you would make $277.36.

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: 75.0¢
Implied chance: 75.0%
Return if right: 33.3%
Spread cost: 8%

If you put in $100

You get 133.3 shares at 75.0¢ each.

NO wins: $133.33 back, a profit of $33.33. NO loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $2.72 of that profit. Without it you would make $36.05.

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 12, 11:12 AM4 further outcomes not shown

Latest news

headlines link to their publishers

No recent headlines matched this market. We only show an article when the names in the question appear in its headline, so a very local or very new market often has nothing. Showing nothing is deliberate: an unrelated story here would read like evidence about the price.

Headlines are matched on the names in “Cincinnati Open: Valentin Royer vs Stefanos Tsitsipas”. 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 Valentin Royer and Stefanos Tsitsipas in the Cincinnati Open, originally scheduled for August 13, 2026 at 10:00AM ET. This market will resolve to 'Valentin Royer' if Valentin Royer advances against Stefanos Tsitsipas. This market will resolve to 'Stefanos Tsitsipas' if Stefanos Tsitsipas advances against Valentin Royer. 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