Fifth-seeded Tomas Berdych defeated Kevin Anderson of South Africa 6-3, 6-2, 7-6 (13) on Sunday to advance to his third consecutive Australian Open quarterfinal.
Berdych, the 2010 Wimbledon runner-up, fought off five set points in the third set and finally closed it out on his fifth match point when Anderson hit a forehand long.
The Czech player has yet to drop a set in the tournament. He next plays the winner of Sunday's night match between No. 1 Novak Djokovic and No. 15 Stanislas Wawrinka of Switzerland.
Anderson had upset No. 22-seeded Fernando Verdasco to reach the fourth round -- his best showing at a major.
Maria Sharapova beat Kirsten Flipkens 6-1, 6-0 on Sunday to continue a dominant and unparalleled run to the Australian Open quarterfinals.
The No. 2-ranked Sharapova conceded only five games in her first four matches, a record at the season's first major.
''Well I'm certainly happy to be playing this well but . . . it only gets tougher from here,&...