Marta Kostyuk def. Mirra Andreeva 4-6, 6-0, 6-2 — Cincinnati Open 2026 R16

Match recap

Marta Kostyuk defeated Mirra Andreeva 4-6, 6-0, 6-2 in the R16 of the Cincinnati Open 2026.

Broken in game 1 and again in game 10, Kostyuk lost the opener to the opponent who had beaten her in a French Open semifinal in June. Then Andreeva's first serve folded. Her first-serve points won fell from 88 percent in that set to 38 in the second, and Kostyuk, who takes the ball early on return by design, broke in game 2 for 2-0 and again in game 4 for 4-0, converting 4 of 5 break points while the fifth seed held only 7 of 11 service games. The win moves the Ukrainian to 7-5 against top-8 opponents this season. Ninety-three minutes, and the No. 10 seed is into the Cincinnati quarterfinals.

Match stats

Marta Kostyuk: 7 aces, 61% first serves, 4 double faults, 5/6 break points. Mirra Andreeva: 1 ace, 59% first serves, 6 double faults, 1/3 break points.

Profiles: Marta Kostyuk · Mirra Andreeva — Cincinnati Open 2026

Head-to-head

Marta Kostyuk and Mirra Andreeva have met 4 times, with Marta Kostyuk leading the head-to-head 3–1.

• Madrid Open 2026 Final — Marta Kostyuk won 6-3, 7-5
• Brisbane International 2026 Quarterfinal — Marta Kostyuk won 7(9)-6(7), 6-3
• French Open 2026 Semifinal — Mirra Andreeva won 6-1, 6-3