http://www.reuters.com/article/sportsNews/idUSB38281020080119
MELBOURNE (Reuters) - Champion Roger Federer survived a massive scare at the Australian Open on Saturday, scrambling to a 6-7 7-6 5-7 6-1 10-8 third-round victory over Serb Janko Tipsarevic.
With Federer strangely off-color, a huge shock looked a real possibility as world number 49 Tipsarevic led by two sets to one, but the top seed came through a tense final set to take his place in the last 16.
A sluggish Federer lost the first set, having served for it at 5-3, but hit back to level, only to lose the third after holding two set points on the Tipsarevic serve in the 10th game.
But Federer, chasing his 13th grand slam title, leveled and after a tense final set, broke in the 17th game and served out to set up a clash with Czech 13th seed Tomas Berdych or Juan Monaco, the 21st seed from Argentina.