Jiri Lehecka KOs Daniil Medvedev at Cincinnati Open
Jiri Lehecka, two matches into his return from a back injury, is already showing top form.,The Czech player upset fourth-seeded Daniil Medvedev of RusJiri Lehecka, two matches into his return from a back injury, is already showing top form.,The Czech player upset fourth-seeded Daniil Medvedev of Rus