- Coco Gauff vs. Marta Kostyuk: Total Sets O/U 2.542¢
- Set 1 Winner: Gauff vs Kostyuk56¢
- Gauff vs. Kostyuk: Match O/U 21.554¢
- Gauff vs. Kostyuk: Set 2 Games O/U 8.550¢
- Set 2 Winner: Gauff vs Kostyuk55¢
- Set Handicap: Gauff (-1.5) vs Kostyuk (+1.5)35¢
- Gauff vs. Kostyuk: Set 1 Games O/U 9.550¢
- Set Handicap: Kostyuk (-1.5) vs Gauff (+1.5)25¢
- Cincinnati Open: Coco Gauff vs Marta Kostyuk56¢
- Cincinnati Open: Completed Match: Coco Gauff vs Marta Kostyuk50¢
- Gauff vs. Kostyuk: Set 1 Games O/U 8.561¢
- Gauff vs. Kostyuk: Set 2 Games O/U 9.550¢
This market refers to the tennis match between Coco Gauff and Marta Kostyuk in the Cincinnati Open, originally scheduled for August 21, 2026 at 11:00AM ET. This market will resolve to 'Coco Gauff' if Coco Gauff advances against Marta Kostyuk. This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Coco Gauff. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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.
Coco Gauff faces Marta Kostyuk in the Cincinnati Open quarterfinal on outdoor hard courts, with Gauff holding the No. 4 ranking and recent solid form after a straight-sets win over Marie Bouzková. Kostyuk, seeded 10th and ranked 11th, reached this stage with a strong comeback against Mirra Andreeva, capturing 12 of the final 14 games after dropping the opener, and has compiled 32 wins in 2026. Gauff leads their head-to-head 3-2 overall, though matches have been competitive, and both players enter with no reported injury concerns following earlier-season issues for Gauff. The matchup features strong serve and baseline play on a surface suiting both, creating a closely contested encounter where recent momentum and ranking edge shape trader consensus around a narrow favorite.