Marta Kostyuk def. Sloane Stephens 7-5, 7-5 — Cincinnati Open 2026 R32

Match recap

Marta Kostyuk defeated Sloane Stephens 7-5, 7-5 in the R32 of the Cincinnati Open 2026.

The first ball separated them. Marta Kostyuk won 26 of 35 first-serve points, 74 percent against 56, and the break she took in game 6 of the opener, for 3-3, wiped out the early edge Sloane Stephens had built. Ranked 286th, Stephens held only 6 of 11 service games against five conversions from nine break chances. The No. 10 seed, who needed three sets to get past Kenin in the previous round, is into the Cincinnati round of 16 in 1h 40m.

Match stats

Marta Kostyuk: 7 aces, 52% first serves, 7 double faults, 6/9 break points. Sloane Stephens: 0 aces, 62% first serves, 2 double faults, 4/9 break points.

Profiles: Marta Kostyuk · Sloane Stephens — Cincinnati Open 2026

Head-to-head

This is the first meeting between Marta Kostyuk and Sloane Stephens.