Indian Wells - Defending champion Novak Djokovic defeated hard-serving American John Isner 6-4, 7-6 (7/5) to reach the quarter-finals of the WTA and ATP Indian Wells tournament on Wednesday.
World number one Djokovic next faces Bernard Tomic of Australia.
Results at the ATP and WTA BNP Paribas Open tennis tournament on Wednesday (x denotes seeding):Men
4th rd
Andy Murray (GBR x4) bt Adrian Mannarino (FRA) 6-3, 6-3
Feliciano Lopez (ESP x12) bt Kei Nishikori (JPN x5) 6-4, 7-6 (7/2)
Milos Raonic (CAN x6) bt Tommy Robredo (ESP x17) 6-3, 6-2
Tomas Berdych (CZE x9) bt Lukas Rosol (CZE x27) 6-2, 4-6, 6-4
Rafael Nadal (ESP x3) bt Gilles Simon (FRA x13) 6-2, 6-4
Roger Federer (SUI x2) bt Jack Sock (USA) 6-3, 6-2
Bernard Tomic (AUS x32) bt Thanasi Kokkinakis (AUS) 6-4, 4-6, 6-4
Novak Djokovic (SRB x1) bt John Isner (USA x18) 6-4, 7-6 (7/5)
Women
Quarter-finals
Simona Halep (ROM x3) bt Carla Suarez (ESP x12) 5-7, 6-1, 6-1
Serena Williams (USA x1) bt Timea Bacsinszky (SUI x27) 7-5, 6-3