Federer enters his 13th Australian Open quarters in 14 years
Switzerland's Roger Federer reached his 13th Australian Open quarter-final after defeating Japan's Kei Nishikori in the round of 16 on Sunday. The 35-year old beat Nishikori in five sets, 6-7(4-7), 6-4, 6-1, 4-6, 6-3, and will play unseeded Mischa Zverev for a place in the semi-finals. The tournament is Federer's first competitive event since Wimbledon last year.