Roger Federer has reached the Australian Open semi-finals.
The third seed saved seven match points to finally come out victorious over Tennys Sandgren with a stunning 6-3, 2-6, 2-6, 7-6(8), 6-3 win on Tuesday.
"You have to get lucky sometimes, I tell you that! Those seven match points are not in my control," he said, after the match.
"He played his match and I got lucky. As the game went on, I found my rhythm and the pressure eased off. I didn't deserve this one but I'm standing here and I'm obviously very happy.
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