- Set 2 Winner: Osaka vs Rybakina46¢
- Osaka vs. Rybakina: Set 1 Games O/U 8.578¢
- US Open WTA: Naomi Osaka vs Elena Rybakina44¢
- US Open WTA: Completed Match: Naomi Osaka vs Elena Rybakina50¢
- Set 1 Winner: Osaka vs Rybakina46¢
- Naomi Osaka vs. Elena Rybakina: Total Sets O/U 2.544¢
- Osaka vs. Rybakina: Set 2 Games O/U 9.550¢
- Osaka vs. Rybakina: Set 1 Games O/U 9.555¢
- Osaka vs. Rybakina: Set 1 Games O/U 10.531¢
- Osaka vs. Rybakina: Set 2 Games O/U 8.550¢
- Osaka vs. Rybakina: Match O/U 21.558¢
- Osaka vs. Rybakina: Match O/U 23.547¢
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.
Naomi Osaka and second-seeded Elena Rybakina meet in the US Open fourth round on hard courts, with Rybakina positioned as the clear favorite based on ranking, recent results, and the pair's only prior meeting. The Kazakh, the Australian Open champion and world No. 2, defeated Yuliia Starodubtseva in straight sets to set up the clash while chasing the top ranking. Osaka, the 13th seed and two-time US Open winner, advanced in three sets against Elise Mertens but dealt with an Achilles concern late in that match. Rybakina defeated Osaka in three sets at the Toronto quarterfinals weeks earlier. Osaka has shown strong form through three rounds in New York after reaching the 2025 semifinals, though Rybakina's power and consistency on serve remain central factors in the matchup.