Australian Open: 'Miracle' man Roger Federer saves seven match points to set up Novak Djokovic semis

*Melbourne:* Swiss great Roger Federer said "I believe in miracles" after he saved seven match points in a five-set nail-biter against 100th-ranked Tennys Sandgren to go into an Australian Open semi-final with Novak Djokovic on Tuesday. The six-time champion, struggling physically, saved three match points at 4-5 in the fourth...