- US Open WTA: Naomi Osaka vs Elise Mertens74¢
- US Open WTA: Completed Match: Naomi Osaka vs Elise Mertens50¢
- Osaka vs. Mertens: Set 2 Games O/U 8.550¢
- Game Spread: Osaka (-4.5) vs Mertens (+4.5)48¢
- Set 2 Winner: Osaka vs Mertens67¢
- Set 1 Winner: Osaka vs Mertens69¢
- Osaka vs. Mertens: Set 1 Games O/U 10.525¢
- Osaka vs. Mertens: Match O/U 21.548¢
- Osaka vs. Mertens: Match O/U 23.540¢
- Osaka vs. Mertens: Set 2 Games O/U 10.550¢
- Osaka vs. Mertens: Match O/U 22.543¢
- Osaka vs. Mertens: Set 2 Games O/U 9.550¢
This market refers to the tennis match between Naomi Osaka and Elise Mertens in the US Open WTA, originally scheduled for September 4, 2026 at 11:00AM ET. This market will resolve to 'Naomi Osaka' if Naomi Osaka advances against Elise Mertens. This market will resolve to 'Elise Mertens' if Elise Mertens 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 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.
Naomi Osaka enters the US Open third-round matchup against Elise Mertens with strong momentum on hard courts, having reached the semifinals in Washington and quarterfinals in Toronto this summer while advancing past Anastasia Zakharova and Katerina Siniakova in New York. Osaka leads the head-to-head 6-3, including straight-sets victories over Mertens on grass in Bad Homburg and hard courts in Toronto within the past two months. The two-time US Open champion has shown improved fitness and consistency in 2026, reaching all four Grand Slam third rounds for just the second time in her career. Mertens, the 23rd seed, secured her spot with straight-sets wins over lower-ranked opponents but faces a significant stylistic challenge against Osaka’s power and serve on the fast hard courts, where recent results and surface history favor the higher-ranked Japanese player.