Tennis News : Karatsev stuns third seed Medvedev with straight sets 6-2, 6-4 win in Rome

Aslan Karatsev stunned his Russian compatriot and third seed Daniil Medvedev with a straight sets 6-2, 6-4 victory at the ATP Rome Masters on Wednesday to set up a round of 16 meeting with the United States' Reilly Opelka.