Kostyuk overcomes Mertens in three-set Cincinnati first round
No.15 seed Marta Kostyuk came from a break down in the third set to defeat Elise Mertens in the first round of the Cincinnati Open -- her second win over the Belgian in three meetings.
No.15 seed Marta Kostyuk came from a break down in the third set to defeat Elise Mertens in the first round of the Cincinnati Open -- her second win over the Belgian in three meetings.
