Defending champion Roger Federer reached his 14th Australian Open semi-final with a straight-sets victory over Tomas Berdych. Second seed Federer, beat the Czech national 7-6 (7-1) 6-3 6-4.
Chung Hyeon became South Korea’s first Grand Slam semi-finalist with a straight-set win over American Tennys Sandgren. Chung, won the quarter-final 6-4 7-6 (7-5) 6-3.
World number one Simona Halep beat Karolina Pliskova in straight sets to reach the semi-finals The 26 year old Romanian, won nine games in a row from 3-0 down in the first set as she went on to triumph 6-3 6-2. Halep will face Angelique Kerber in the last four after she thrashed Madison Keys 6-1 6-2 in 51 minutes.