Daniil Medvedev demonstrated again why he is the man to beat at the Australian Open with a battling win over Maxime Cressy in the Melbourne heat.
The Russian second seed reached the quarter-finals with a 6-2 7-6 (7-4) 6-7 (4-7) 7-5 victory over the American.
Medvedev was frustrated by 24-year-old Cressy's resistance, needing his ninth break point to finally take control of the fourth set and the match.
"I've played harder matches but this was long. It wasn't easy," he said.
"The fourth set was crazy. Every time I had a break point he would have second serves and hit the line.