Three-time grand-slam champion Andy Murray is considering retiring after the Australian Open, admitting he can no longer play at the top level.
A devastated Murray was in tears on Friday when he made the announcement, briefly walking out of a media conference to gather his composure.
Murray intends playing in the season-opening major at Melbourne Park but says there is a chance it will be his final tournament.
"I'm not sure I'm able to play through the pain for another four or five months," he said.
"I want to get to Wimbledon and stop but I'm not certain I can do that."
Murray was visibly emotional the morning after his chastening practice match against Novak Djokovic.
Watched by around 2,000 people on the Margaret Court Arena show court at Melbourne Park, Murray was 6-1 4-1 down when the two players called it a day.
The Scot, whose movement was laboured, held serve only once.
Murray, who has slipped to 230th in the world rankings, is due to face Spanish 22nd seed Roberto Bautista Agut in the first round in Melbourne.