National Bank Open: Sara Bejlek vs Iga Swiatek

Q: National Bank Open: Sara Bejlek vs Iga Swiatek

Prediction markets currently price this at 1%. A YES share costs 0.9¢ and pays $1 if it happens. That is a return of 11011.1% over 17h.

National Bank Open: Sara Bejlek vs Iga Swiatek$405k liquidity$187k volumecloses 17h

TennisSportsGames

Trade on Polymarket

BUY YES

Cost: 0.9¢
Implied chance: 0.9%
Return if right: 11011.1%
Spread cost: 11%

If you put in $100

You get 11111.1 shares at 0.9¢ each.

YES wins: $11111.11 back, a profit of $11011.11. YES loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $1388.89 of that profit. Without it you would make $12400.00.

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: 99.3¢
Implied chance: 99.3%
Return if right: 0.7%
Spread cost: 13%

If you put in $100

You get 100.7 shares at 99.3¢ each.

NO wins: $100.70 back, a profit of $0.70. NO loses: $0.00, and the whole $100 is gone.

The gap between buyers and sellers takes $0.10 of that profit. Without it you would make $0.81.

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 4, 06:00 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 “National Bank Open: Sara Bejlek vs Iga Swiatek”. 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 Sara Bejlek and Iga Swiatek in the National Bank Open, originally scheduled for August 4, 2026 at 12:30PM ET. This market will resolve to 'Sara Bejlek' if Sara Bejlek advances against Iga Swiatek. This market will resolve to 'Iga Swiatek' if Iga Swiatek advances against Sara Bejlek. 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 WTA Tour. A consensus of credible reporting may also be used.

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