ATP St. Petersburg: Daniil Medvedev surprisingly fails to Reilly Opelka, Karen Khachanov

Daniil Medvedev failed surprisingly early at the ATP 500 event in St. Petersburg. The top seeded Russian lost to Reilly Opelka in three sets in the round of 16. His compatriots KarenKhachanov and Andrey Rublev and the Canadian Denis Shapovalov, however, are as expected in the quarter-finals.