Britain's Andy Murray practised at Wimbledon on Saturday as he tries to prove fitness for what is expected to be his All England Club farewell.
Murray, 37, had a procedure on a back issue last weekend, leaving his participation in serious doubt.
The two-time Wimbledon champion, who plans to retire later this year, is scheduled to play his first-round singles match on Tuesday.
"I'm just trying to do what I can, trying to keep progressing each day. Whether there’s enough time or not, I don’t know, but I’m trying," said Murray, who has been drawn against Tomas Machac of the Czech Republic.