Andy Murray will hope his suspect ankle stands up to the demands of competitive singles when he takes on Xavier Malisse in the second round of the Aegon Championships on Wednesday.
The Briton, who received a bye in round one as one of the top four seeds, will take on Belgian Malisse in the second match on Centre Court at around 1400 BST, with Rafael Nadal and Juan Martin del Potro also in action on day three.
Murray had been a doubt for the Queen's Club event after damaging a tendon in his right ankle during his run to the French Open semi-finals last week.
There had been another slight scare when Murray appeared to break down in practice on Tuesday afternoon but he later returned to continue the session.
Murray and his brother Jamie then teamed up for the doubles but lost in straight sets to Malisse and Englishman Ken Skupski.
Asked about the ankle on Monday, Murray said: "It's definitely better than it was originally. It was a bit sore obviously when it happened, and playing matches on it didn't necessarily help too much, but it's definitely better than it was and it should be OK."
Murray has won all three previous matches against Malisse, including a three-set win on clay in Rome last month, but the 30-year-old Belgian is a talented shot-maker and former Wimbledon semi-finalist.
"Of course he's the favourite on paper; plus he's playing at home," said Malisse. "We had a good match in Rome a couple weeks back, and it's one of those matches where I don't have much to lose."
French Open champion and world number one Nadal was another leading name in doubles action on Tuesday as he makes the switch to grass from winning on clay on Sunday.
The Spaniard opens his singles campaign against Australian qualifier Matthew Ebden, ranked 168, in the third match on Centre Court, before Del Potro plays Igor Kunitsyn.
Croatian eighth seed Marin Cilic and French qualifier Arnaud Clement open play on Centre at 1230 BST.