National Bank Open: Marta Kostyuk vs Iga Swiatek
BUY YES
- Cost
- 0.1¢
- Implied chance
- 0.1%
- Return if right
- 99900.0%
- Spread cost
- n/a
If you put in $100
You get 100000.0 shares at 0.1¢ each.
YES wins: $100000.00 back, a profit of $99900.00. YES loses: $0.00, and the whole $100 is gone.
Assumes the whole order fills at this price. A large order eats into the book and averages worse.
Buy YES on Polymarket
- National Bank Open: Marta Kostyu…42.5%
- Kostyuk vs. Swiatek: Set 1 Games…68.0%
- Set 1 Winner: Kostyuk vs Swiatek44.5%
- Set Handicap: Swiatek (-1.5) vs …37.5%
- Set Handicap: Kostyuk (-1.5) vs …25.5%
- Set 2 Winner: Kostyuk vs Swiatek45.0%
Latest: Aug 8, 12:00 PM4 further outcomes not shown
Latest news
headlines link to their publishersNo 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: Marta Kostyuk 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 Marta Kostyuk and Iga Swiatek in the National Bank Open, originally scheduled for August 9, 2026 at 10:00AM ET. This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Iga Swiatek. This market will resolve to 'Iga Swiatek' if Iga Swiatek advances against Marta Kostyuk. 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
Other outcomes in National Bank Open: Marta Kostyuk vs Iga Swiatek
Set 1 Winner: Kostyuk vs Swiatek
Kostyuk vs. Swiatek: Match O/U 21.5
Set Handicap: Swiatek (-1.5) vs Kostyuk (+1.5)
Set Handicap: Kostyuk (-1.5) vs Swiatek (+1.5)
Kostyuk vs. Swiatek: Match O/U 23.5
Kostyuk vs. Swiatek: Match O/U 22.5
Marta Kostyuk vs. Iga Swiatek: Total Sets O/U 2.5
Set 2 Winner: Kostyuk vs Swiatek
Kostyuk vs. Swiatek: Set 1 Games O/U 8.5
Kostyuk vs. Swiatek: Set 1 Games O/U 10.5
Kostyuk vs. Swiatek: Set 1 Games O/U 9.5
Kostyuk vs. Swiatek: Set 2 Games O/U 10.5
Kostyuk vs. Swiatek: Set 2 Games O/U 8.5
Kostyuk vs. Swiatek: Set 2 Games O/U 9.5
National Bank Open: Completed Match: Marta Kostyuk vs Iga Swiatek