Australia’s Alex de Minaur reached his first Wimbledon quarter-final on Monday with a four-set win over Arthur Fils of France although he ended the match grimacing with pain.

World No. 9 De Minaur won 6-2, 6-4, 4-6, 6-3 and will face Novak Djokovic for a place in the semi-finals if the seven-time champion defeats Holger Rune later Monday. De Minaur appeared to roll his ankle as he played the winning shot on Court One and walked gingerly back to his courtside chair. As he sat down, he shook his head towards his box, where 2002 Wimbledon champion Lleyton Hewitt, a fellow Australian, and tennis-playing girlfriend Katie Boulter looked on. “I’ll be all right,” De Minaur said in his on-court interview.