Results from the ATP/WTA Italian Open in Rome on Friday (x denotes seeding): Men Quarter-finals Rafael Nadal (ESP x2) bt Alexander Zverev (GER x6) 6-3, 6-4 Reilly Opelka (USA) bt Federico Delbonis (ARG) 7-5, 7-6 (7/2) Women Quarter-finals Petra Martic (CRO) bt Jessica Pegula (USA) 7-5, 6-4 afp