Swiss Roger Federer acknowledges the crowd after his win over Czech Tomas Berdych in the Australian Open quarter-final yesterday. Pic/AFP

Roger Federer is happy to see Kyle Edmund and Chung Hyeon make their breakthroughs at the Australian Open to bring fresh blood to the sport. Federer will play Chung after beating Tomas Berdych 7-6, 6-3 6-4 while Edmund takes on Marin Cilic. "I think it's a good thing," said Federer. "They've got to make a move. I find it disappointing when their breakthroughs come at 27, because then we know them for seven years. I like it when we don't know the guys.