This market refers to the tennis match between Marta Kostyuk and Madison Keys in the National Bank Open, originally scheduled for August 5, 2026 at 11:00AM ET.
This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Madison Keys.
This market will resolve to 'Madison Keys' if Madison Keys 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 Madison Keys
WTA
Madison Keys2
Marta Kostyuk4LIVE · S1
Game context
Marta Kostyuk holds a narrow edge in trader pricing for this National Bank Open third-round matchup on outdoor hard courts in Toronto, reflecting her higher current ranking and recent straight-sets win over a local qualifier to reach this stage. Madison Keys leads the head-to-head 2-0 with straight-sets victories on grass, but Kostyuk’s improved baseline consistency and power have narrowed that gap on faster surfaces. Both players carry recent injury histories—Kostyuk with an ankle issue earlier in the season and Keys with thigh problems that prompted withdrawals—but neither has shown limitations in Toronto warm-ups. Keys’ experience in high-stakes matches and serving power remain key variables, while home-crowd support and rest advantages could influence the outcome on a surface that rewards aggressive returns.
Moneyline
$492.2K Vol.Match Completed
Set Winner
1st Set Winner
$3.1K Vol.1st Set Total
National Bank Open: Marta Kostyuk vs Madison Keys Set 1 O/U 8.5
National Bank Open: Marta Kostyuk vs Madison Keys Set 1 O/U 9.5
National Bank Open: Marta Kostyuk vs Madison Keys Set 1 O/U 10.5
Set Total
$207 Vol.National Bank Open: Marta Kostyuk vs Madison Keys Total Sets: O/U 2.5
National Bank Open: Marta Kostyuk vs Madison Keys Set 2 O/U 8.5
National Bank Open: Marta Kostyuk vs Madison Keys Set 2 O/U 9.5
National Bank Open: Marta Kostyuk vs Madison Keys Set 2 O/U 10.5
Set Handicap
$4.7K Vol.National Bank Open: Marta Kostyuk vs Madison Keys Set Handicap +/-1.5
National Bank Open: Marta Kostyuk vs Madison Keys Set Handicap +/-1.5
Total Games
$748 Vol.National Bank Open: Marta Kostyuk vs Madison Keys Match O/U 21.5
National Bank Open: Marta Kostyuk vs Madison Keys Match O/U 22.5
National Bank Open: Marta Kostyuk vs Madison Keys Match O/U 23.5
Resolution Source: www.wtatennis.com
Odds & FAQ
What are the current odds for National Bank Open: Marta Kostyuk vs Madison Keys?
National Bank Open: Marta Kostyuk vs Madison Keys Set 1 Winner leads the field at 74%, with National Bank Open: Marta Kostyuk vs Madison Keys Set 2 Winner next at 56%. A solid favorite - though every trade can reshuffle the board.
What do traders predict for National Bank Open: Marta Kostyuk vs Madison Keys?
Traders lean toward National Bank Open: Marta Kostyuk vs Madison Keys Set 1 Winner, pricing it at 74%. That's conviction with real money behind it - but live forecasts shift, sometimes quickly.
When does the National Bank Open: Marta Kostyuk vs Madison Keys market resolve?
Mark 12 Aug 2026 (6 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 Madison Keys?
$6.7M in total volume has traded here. Deeper markets like this tend to price events more sharply.
How can I trade National Bank Open: Marta Kostyuk vs Madison Keys on Polymarket?
Follow this page for live prices; trading happens on Polymarket itself. Start small - implied odds move, and so can your position's value.
