Australian Open: Novak Djokovic beats Gilles Simon in last 16
Defending champion Novak Djokovic survived a scare against Gilles Simon to reach the last eight of the Australian Open in Melbourne.

Five-time champion Djokovic made 100 unforced errors but prevailed 6-3 6-7 (1-7) 6-4 4-6 6-3 after four hours and 32 minutes on Rod Laver Arena.

Djokovic, 28, is through to his 27th consecutive Grand Slam quarter-final.

Four-time champion Roger Federer was in vintage form in beating Belgium's David Goffin 6-2 6-1 6-4.

Djokovic plays Japan's Kei Nishikori in the last eight after the seventh seed beat Jo-Wilfried Tsonga 6-4 6-2 6-4, while third seed Federer plays Tomas Berdych.

The Czech sixth seed came through a testing encounter against Spain's Roberto Bautista Agut 4-6 6-4 6-3 1-6 6-3.