Roger Federer saves seven match points in great escape against Sandgren

Swiss fights back after being hampered by injuries 6-3, 2-6, 2-6, 7-6 (10-8), 6-3 win secures place in semi Roger Federer has survived seven match points to book an Australian Open semi-final berth with a miraculous win over unseeded American Tennys Sandgren. Hampered by an apparent back injury, the six-time champion appeared headed for a shock exit against the world No.100 before rallying for a rousing 6-3, 2-6 ,2-6, 7-6 (10-8), 6-3 victory. Related: Australian Open day nine: Federer fights bac...