Carlos Alcaraz has reached his 10th career Grand Slam quarterfinal, tied for the most by a man before his 22nd birthday, by advancing at the Australian Open when 15th-seeded Jack Draper stopped playing because of injury after dropping the first two sets of their fourth-round match.

Carlos Alcaraz sent a touching message of support to Jack Draper after the Briton was forced to retire injured in their fourth round match at the Australian Open. At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

Jack Draper withdrew from his fourth-round match with Carlos Alcaraz here at the Australian Open after suffering what looked like a recurrence of the hip trouble that had dogged him during the off-season.