Andy Murray said "it's impossible" to know yet whether he will be able to compete at Wimbledon, even if he is "feeling better every day" as he recovers from surgery to remove a cyst from his spine.
Murray, 37, is scheduled to play in the first round of singles at the All England Club on Tuesday. He and his older brother, Jamie, were given a wild card invitation for doubles, too, and that event starts later in the week.
The Brit had back surgery on June 22 after retiring from his second-round match at Queen's a few days earlier. He said the cyst was compressing a nerve and making his right leg numb and difficult to use, and he figured before the operation it was "highly likely" he would miss Wimbledon.
"It's been a tough 10 days," he said.
"It went pretty well, but I still don't have 100% feeling and sensation in my leg," he said of the practice set he had on Sunday.
Murray plans to undergo medical tests on Monday -- the first day of Wimbledon -- and play another practice set, and then probably will make a decision in the evening.
Murray owns a total of three major championships. He won the US Open in 2012, and Wimbledon in 2013 and 2016. His 2013 title made him the first British man to win the singles trophy at the All England Club in 77 years.
He also is the only player with two consecutive tennis gold medals in singles at the Olympics. He won at London 2012 -- when the sport's Summer Games matches were held at the All England Club -- and at Rio 2016.
Murray underwent a pair of hip operations in 2018 and 2019. While he thought he would need to retire after the second surgery, in which he received a metal hip implant, Murray eventually returned to action.
He has since been hampered by various health issues, including tearing ligaments in his left ankle at the Miami Open in March.
Murray lost in the first round of the French Open in May.
He is not the only 37-year-old with multiple Wimbledon championships on his record who is dealing with recovery from recent surgery: Novak Djokovic, who won seven of his 24 Grand Slam titles at the All England Club, had a procedure to repair a torn meniscus in his right knee less than a month ago after getting hurt at the French Open.
Djokovic said Saturday he feels well enough to compete at Wimbledon and perhaps even contend for another trophy.