This market refers to the tennis match between Naomi Osaka and Katerina Siniakova in the US Open WTA, originally scheduled for September 2, 2026 at 11:00AM ET.
This market will resolve to 'Naomi Osaka' if Naomi Osaka advances against Katerina Siniakova.
This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Naomi Osaka.
If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 16, 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: Naomi Osaka vs Katerina Siniakova
WTA
Katerina Siniakova271
Naomi Osaka656Final
Game context
Naomi Osaka entered the second-round matchup as the clear favorite, reflecting her No. 13 WTA ranking, two US Open titles, and strong 2026 hard-court form that included a Washington semifinal and Toronto quarterfinal. The 28-year-old also carried a 2-1 head-to-head edge, including a straight-sets win over Siniakova at Wimbledon 2025. Siniakova, ranked No. 42 and primarily a doubles standout with multiple Grand Slam titles in that discipline, has rarely advanced deep in singles majors and entered with modest recent results on hard courts. Traders priced Osaka’s experience on Ashe Stadium and superior baseline power as decisive advantages in a match that ultimately went three sets.
Moneyline
$186.1K Vol.Match Completed
$303 Vol. Resolution Source: www.wtatennis.com
Odds & FAQ
What do traders predict for US Open WTA: Naomi Osaka vs Katerina Siniakova?
Traders currently imply a 50% chance for Completed Match. 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: Naomi Osaka vs Katerina Siniakova market resolve?
This market is scheduled to resolve on 9 Sep 2026 (6 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: Naomi Osaka vs Katerina Siniakova?
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: Naomi Osaka vs Katerina Siniakova 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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