Defending champion Novak Djokovic survived a massive scare against Gilles Simon to reach the quarter-finals of the Australian Open in Melbourne.
Five-time champion Djokovic made 100 unforced errors but finally prevailed 6-3 6-7 (1-7) 6-4 6-3.
The marathon match lasted four hours and 32 minutes on Rod Laver Arena.
The Serb, 28, will play Japan's Kei Nishikori in the last eight after the seventh seed beat Jo-Wilfried Tsonga 6-4 6-2 6-4.
Nishikori broke Tsonga's serve five times while the Frenchman hit eight double-faults in a flat display.
"Today was one of the best matches I've had this week," said 28-year-old Nishikori, a US Open finalist in 2014.