Tennis

Zverev edges past Harris to reach Cologne Open semi-finals; Rublev reaches last four at St Petersburg open – Sports News , Firstpost | Firstpost

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Hard-serving American Reilly Opelka, who beat defending champion Daniil Medvedev at St Petersburg Open on Thursday, was beaten by the seventh-seeded Borna Coric 7-6 (3), 6-3 in their quarterfinal.