This market refers to the tennis match between Marta Kostyuk and Ekaterina Alexandrova in the US Open WTA, originally scheduled for September 4, 2026 at 11:00AM ET.
This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Ekaterina Alexandrova.
This market will resolve to 'Ekaterina Alexandrova' if Ekaterina Alexandrova advances against Marta Kostyuk.
If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 18, 2026, 11:59 PM ET (14 days after the scheduled start), 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.
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova
WTA
Ekaterina Alexandrova
0-0
–
vs
04/09 15:00
–
Marta Kostyuk
0-0
Game context
Marta Kostyuk enters this US Open third-round match as the clear favorite against Ekaterina Alexandrova, backed by her career-best ranking of No. 11 and a dominant 2026 season that included semifinals at Roland Garros and Wimbledon. The 24-year-old Ukrainian has won her first two matches in straight sets on hard courts, defeating Storm Hunter and Sloane Stephens with strong serving and break-point conversion. Alexandrova, ranked No. 19, holds a 2-0 head-to-head edge from prior encounters but arrives with a mixed 17-21 record this year and has needed three sets to advance past McCartney Kessler and Kimberly Birrell. The hard-court setting and Kostyuk’s recent momentum on outdoor surfaces favor the higher-ranked player, though Alexandrova’s experience in longer rallies could extend the contest if she maintains first-serve percentages.
Moneyline
$49.6K Vol.Match Completed
Set Winner
Set Total
$9 Vol.US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 2 O/U 8.5
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Total Sets: O/U 2.5
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 2 O/U 9.5
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 2 O/U 10.5
1st Set Winner
$7 Vol.Total Games
$17 Vol.US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Match O/U 21.5
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Match O/U 22.5
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Match O/U 23.5
More Bets
$223 Vol.1st Set Total
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 1 O/U 8.5
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 1 O/U 9.5
US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 1 O/U 10.5
Set Handicap
Resolution Source: www.wtatennis.com
Odds & FAQ
What are the current odds for US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova?
The current front-runner is US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 2 Winner at 69%, ahead of US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 1 Winner at 68%. These live odds update with every trade on the Polymarket order book.
What do traders predict for US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova?
Traders currently imply a 69% chance for US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova Set 2 Winner. Market-implied probabilities reflect real money at stake, but they are live forecasts that shift as new information arrives, not guarantees.
When does the US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova market resolve?
This market is scheduled to resolve on 11 Sep 2026 (8 days left). It settles according to Polymarket's published resolution criteria once the outcome is confirmed.
How much money is trading on US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova?
Total traded volume on this market is $4M, a measure of how much real money traders have committed to the outcome.
How can I trade US Open WTA: Marta Kostyuk vs Ekaterina Alexandrova on Polymarket?
You can follow the live odds on this page and open the market on Polymarket to trade it yourself. Prediction trading carries risk; never stake more than you can afford to lose.
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