Set 1 Winner: Osaka vs Rybakina — live odds

Part of National Bank Open: Naomi Osaka vs Elena Rybakina· see all 2 outcomes →📲 Open in app

"Set 1 Winner: Osaka vs Rybakina" is trading at a 100% implied probability, with YES at 100¢ and NO at 0¢. $32K has changed hands so far, $32K of it in the past 24 hours, and the market is scheduled to resolve by August 18, 2026. PolyWatch tracks every odds move, whale trade and volume spike on this sports market in real time.

100%

implied probability

YES 100¢NO 0¢

recent price

+46¢ over the window

+46¢

24h change

$32K

24h volume

$32K

total volume

Aug 18, 2026

resolves

Radar activity on this market

Recent signals from PolyWatch's detectors watching this market 24/7.

No detector alerts on this market in the last 24 hours — quiet tape.

How this market resolves

This market refers to the tennis match between Naomi Osaka and Elena Rybakina in the National Bank Open, originally scheduled for August 11, 2026 at 10:00AM ET. This market will resolve to “Osaka” if Naomi Osaka wins the first set. It will resolve to “Rybakina” if Elena Rybakina wins the first set. If the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled (not played at all) or is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50. Resolution will be based on official WTA match statistics.