US Open WTA: Naomi Osaka vs Elena Rybakina
This market refers to the tennis match between Naomi Osaka and Elena Rybakina in the US Open WTA, originally scheduled for September 7, 2026 at 11:00AM ET. This market will resolve to 'Naomi Osaka' if Naomi Osaka advances against Elena Rybakina. This market will resolve to 'Elena Rybakina' if Elena Rybakina 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 21, 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.
Probability state
Why did this move?
Market signal only · Market signal only
No verified catalyst identified. The probability changed in the market, but Omeyr has not verified the cause.
Observed market facts
- Observed probability decrease of about 2 pts in the selected window.
- Reported 24-hour volume about $737,990.
Limitations
- High absolute volume is not classified as unusual without a historical baseline.
- Do not treat market activity as news attribution.
The probability decreased by about 2 pts over the past 24 hours. This is an observed market fact — not a news attribution.
Evidence timeline
No verified catalyst. omeyr does not invent news, filings, or posts.
Related Futures
No curated impact chain for this event yet.
Probability
Source & Resolution
Primary listing
Resolution rules
Original source text
This market refers to the tennis match between Naomi Osaka and Elena Rybakina in the US Open WTA, originally scheduled for September 7, 2026 at 11:00AM ET. This market will resolve to 'Naomi Osaka' if Naomi Osaka advances against Elena Rybakina. This market will resolve to 'Elena Rybakina' if Elena Rybakina 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 21, 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.
What could change this?
Potential future catalysts — not observed evidence.
- Official policy or regulatory announcement
- Primary-source confirmation from involved parties
- Material data release tied to the resolution criteria
Venue listing: /market/wta-osaka-rybakin-2026-09-07