Giotis vs. Guinau: Match O/U 21.5

Q: Giotis vs. Guinau: Match O/U 21.5

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 7d.

ITF M25 Oldenzaal Men: Rafael Giotis vs Sammy Guinau$0 liquidity$0 volumecloses 7d

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: Aug 24, 03:41 PM4 further outcomes not shown

Latest news

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How this market resolves

This market refers to the tennis match between Rafael Giotis and Sammy Guinau in the ITF M25 Oldenzaal Men, originally scheduled for August 24, 2026 at 10:00AM ET. This market will resolve to "Over" if the total number of games completed equals or exceeds 22. Otherwise, it will resolve to "Under." All tiebreaks, including any Champions/Super tiebreak, count as one (1) game. If the match is postponed or suspended, this market will remain open until the match has been completed. A postponement alone will not trigger a 50-50 resolution. If the match is permanently abandoned before completion, or if the match has not been completed by September 7, 2026, 11:59 PM ET, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play. The primary resolution source for this market will be official ITF statistics; however, a consensus of credible reporting may also be used.

Source: https://www.itftennis.com/en/tournament-calendar/