Murray and Nadal to start Queen's Club campaigns
Andy Murray will begin his grass-court campaign at Queen's Club on Tuesday, with Rafael Nadal and Stan Wawrinka also featuring.
Top seed Murray, 28, will play Taiwanese qualifier Yen-Hsun Lu in the fourth match at about 16:30 BST.
French Open champion Wawrinka opens play against Nick Kyrgios at 12:30.
Grigor Dimitrov and Sam Querrey then resume at one set all, before Nadal returns to Queen's for the first time since 2011.
The Spaniard, who won the title in 2008, takes on Ukraine's Alexandr Dolgopolov.
Murray will be in action for the first time since losing to Novak Djokovic at the French Open 10 days earlier.
The Scot has since recovered from a bout of illness, with the start of Wimbledon just two weeks away.
A three-time winner of the Aegon Championships, Murray is looking to improve on last year, when he was beaten in the third round before losing in the quarter-finals of Wimbledon.
"From the beginning of this year I've felt ready to win major competitions again," said Murray, who was searching for his best form in 2014 following back surgery.
"It's been huge, huge progress from where I was this time last year. I've played extremely well so far this year so I have to be happy about that."
Nadal, 29, is seeded fifth after a relatively disappointing clay-court season ended with his first defeat in six years at the French Open, where he lost to Djokovic in the quarter-finals.
However, the Spaniard arrived in London off the back of winning his first grass-court title in five years in Stuttgart on Sunday.
"The first three and a half months of the season have been terrible for me, very bad, playing very bad almost every week," said Nadal.
"The last month and a half, I feel that I am playing better. The most important thing is that I am enjoying being on court again."
Wawrinka, 30, won the second Grand Slam title of his career in Paris, but the Swiss faces a tough challenge for his first match of the year on grass against Australian Kyrgios, the man who beat Nadal at Wimbledon last year.