Mar 26 (OPTA) - Results from the ATP World Tour Masters 1000 / WTA Premier, Miami Masters Men's Singles matches on Sunday .. 3rd Round .. 5-Juan Martin del Potro beat 26-Kei Nishikori (JPN) 6-2 6-2 (ARG) 22-Filip Krajinovic (SRB) beat Benoit Paire (FRA) 6-3 6-3 Jeremy Chardy (FRA) beat 3-Grigor Dimitrov (BUL) 6-4 6-4 Joao Sousa (POR) beat Jared Donaldson (USA) 1-6 6-3 6-4 19-Hyeon Chung (KOR) beat Michael Mmoh (USA) 6-1 6-1 14-John Isner (USA) beat Mikhail Youzhny (RUS) 6-4 6-3 2-Marin Cilic (CRO) beat Vasek Pospisil (CAN) 7-5 7-6(4)