Harris vs. Tsitsipas: Set 3 Games O/U 9.5

Q: Harris vs. Tsitsipas: Set 3 Games O/U 9.5

Prediction markets currently price this at 99%. A YES share costs 99.0¢ and pays $1 if it happens. That is a return of 1.0% over 9d.

US Open ATP: Lloyd Harris vs Stefanos Tsitsipas$0 liquidity$0 volumecloses 9d

TennisSportsGames

Trade on Polymarket

BUY YES

Cost: 99.0¢
Implied chance: 99.0%
Return if right: 1.0%
Spread cost: 99%

If you put in $100

You get 101.0 shares at 99.0¢ each.

YES wins: $101.01 back, a profit of $1.01. YES loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $98.99 of that profit. Without it you would make $100.00.

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: 99.0¢
Implied chance: 99.0%
Return if right: 1.0%
Spread cost: 99%

If you put in $100

You get 101.0 shares at 99.0¢ each.

NO wins: $101.01 back, a profit of $1.01. NO loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $98.99 of that profit. Without it you would make $100.00.

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: Sep 1, 02:26 AM4 further outcomes not shown

Latest news

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How this market resolves

This market refers to the tennis match between Lloyd Harris and Stefanos Tsitsipas in the US Open ATP, originally scheduled for September 2, 2026 at 11:00AM ET. This market will resolve to "Over" if the total number of games completed in set 3 equals or exceeds 10. Otherwise, it will resolve to "Under." Any tiebreak in set 3 counts as one (1) game toward the total. If set 3 begins but is not completed, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play. An outcome is considered determined if it would have been guaranteed had the set been played to completion using the minimum number of additional games required. For example, for a line of 9.5, if play stops with set 3 at 5-4, completing the set would have required at least 1 additional game, resulting in at least 10 games played, so "Over" would resolve as the winning outcome. If the match ends before set 3 is reached, this market will resolve 50-50. If the match is canceled before play begins, or play has not begun by September 16, 2026, 11:59 PM ET (14 days after the scheduled start), this market will also resolve 50-50. Resolution will be based on official Grand Slam results.

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