Kubka vs. Ribera: Set 1 Games O/U 8.5

Q: Kubka vs. Ribera: Set 1 Games O/U 8.5

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 7d.

US Open, Qualification WTA: Martyna Kubka vs Marina Bassols Ribera$446 liquidity$0 volumecloses 7d

TennisSportsGames

Trade on Polymarket

BUY YES

Cost: 78.0¢
Implied chance: 78.0%
Return if right: 28.2%
Spread cost: 51%

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 $29.28 of that profit. Without it you would make $57.48.

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: 51.0¢
Implied chance: 51.0%
Return if right: 96.1%
Spread cost: 45%

If you put in $100

You get 196.1 shares at 51.0¢ each.

NO wins: $196.08 back, a profit of $96.08. NO loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $77.89 of that profit. Without it you would make $173.97.

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 26, 12:33 PM4 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 “Kubka vs. Ribera: Set 1 Games O/U 8.5”. 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 Martyna Kubka and Marina Bassols Ribera in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 11:00AM ET. This market will resolve to "Over" if the total number of games completed in the first set equals or exceeds 9. Otherwise, it will resolve to "Under." Any first-set tiebreak counts as one (1) game. If the match is postponed or suspended, this market will remain open until the first set has been completed. A postponement alone will not trigger a 50-50 resolution. If the match is permanently abandoned before the first set is completed, or if the first set has not been completed by September 9, 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 Grand Slam statistics; however, a consensus of credible reporting may also be used.

Source: https://www.wtatennis.com/scores