Britain's Andy Murray faces a race against time to play Wimbledon because of the abdominal injury that forced him out of Queen's last week.
The Grand Slam event starts at the All England Club next Monday and Murray, who won in 2013 and 2016, says he is still unable to hit certain shots.
"The injury is healing but still not perfect," the 35-year-old Scot said.
On his hopes at Wimbledon, he added: "My goal is to get to the start line in a good place physically and give myself the best chance to do well."
Murray picked up the injury in the Stuttgart final last week and as a result withdrew from Queen's a day later.