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.
National Bank Open: Marta Kostyuk vs Iga Swiatek
WTA
Iga Swiatek
0-0
–
vs
08/08 16:30
–
Marta Kostyuk
0-0
Game context
Iga Swiatek enters the National Bank Open round of 16 against Marta Kostyuk with a 23-12 record in 2026 and an eighth-place ranking, following early exits at the Australian Open, French Open, and Wimbledon. Kostyuk, ranked 11th with a 27-6 mark and titles in Madrid and Rouen, arrives after a career-best run to semifinals at both the French Open and Wimbledon. Their most recent meeting saw Kostyuk defeat Swiatek 7-5, 6-1 in the 2026 Roland Garros round of 16 on clay. In Toronto, Swiatek has posted straight-set wins over Sara Bejlek and Viktorija Golubic, while Kostyuk advanced past Madison Keys in straight sets after earlier victories. The hard-court matchup pits Swiatek’s experience against Kostyuk’s current momentum and improved consistency.
Moneyline
$23.3K Vol.Match Completed
1st Set Winner
Set Winner
1st Set Total
National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 8.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 9.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 10.5
Set Total
$9 Vol.National Bank Open: Marta Kostyuk vs Iga Swiatek Total Sets: O/U 2.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Set 2 O/U 8.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Set 2 O/U 9.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Set 2 O/U 10.5
Set Handicap
$14 Vol.National Bank Open: Marta Kostyuk vs Iga Swiatek Set Handicap +/-1.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Set Handicap +/-1.5
Total Games
National Bank Open: Marta Kostyuk vs Iga Swiatek Match O/U 21.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Match O/U 22.5
National Bank Open: Marta Kostyuk vs Iga Swiatek Match O/U 23.5
Resolution Source: www.wtatennis.com
Odds & FAQ
What are the current odds for National Bank Open: Marta Kostyuk vs Iga Swiatek?
The money is on National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 8.5 at 67%; Completed Match follows at 50%. Live order-book odds, refreshed with every fill.
What do traders predict for National Bank Open: Marta Kostyuk vs Iga Swiatek?
Traders lean toward National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 8.5, pricing it at 67%. That's conviction with real money behind it - but live forecasts shift, sometimes quickly.
When does the National Bank Open: Marta Kostyuk vs Iga Swiatek market resolve?
Mark 16 Aug 2026 (9 days left): that's when this market is due to resolve, following Polymarket's published criteria once the result is verified.
How much money is trading on National Bank Open: Marta Kostyuk vs Iga Swiatek?
Total turnover stands at $5.4M. Volume shows conviction: these odds are backed by actual positions, not polls.
How can I trade National Bank Open: Marta Kostyuk vs Iga Swiatek on Polymarket?
You can watch the odds move here in real time and trade the market directly on Polymarket. As always, prediction trading carries real risk.
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