Rafael Nadal and Tomas Berdych wrapped up respective three-set victories, to set up an Australian Open quarter-final clash.
Tomas Berdych quelled the threat of Bernard Tomic at the Australian Open, while Rafael Nadal also won in straight sets.
Berdych, the seventh seed, had been properly tested by Tomic in their two prior meetings - both at Wimbledon - but on the latter's home soil, the Czech was a comfortable victor 6-2 7-6 (7-3) 6-2 on Margaret Court Arena.
The big-hitting Berdych booked his fifth straight quarter-final appearance at Melbourne Park, as he looks to at least match his career-best semi-final effort from 2014.
Berdych also extended an impressive record in the early rounds of the year's first major - he has not dropped a set in the first four rounds of the hard-court tournament in the past three years.
Nadal, meanwhile, got off to a sluggish start before turning up the heat to see off 14th seed Kevin Anderson 7-5 6-1 6-4.
The third seed was looking down the barrel of conceding the first set when he was serving at 5-5 0-40, but he went on to save five break points in the game to turn the momentum in his favour.
The service hold would be the first of seven consecutive games as he wrenched control from his South African opponent.
Nadal did not concede another break-point chance after the 11th game of the first set, and he converted four of six opportunities on Anderson's serve to secure progression in two hours six minutes.
Local hope Nick Kyrgios overcame Italian Andreas Seppi in a dramatic five-setter.
Seppi was full of confidence after ousting Roger Federer but he was overhauled by the Australian teenager, who won 5-7 4-6 6-3 7-6 (7-5) 8-6 after three hours and 34 minutes on court.