World number one Rafael Nadal will play in the Aegon Championships at Queen's Club in June - 10 years after winning the event as part of a summer treble.
Nadal, who has withdrawn from the past two tournaments at the London venue, won the French Open and Wimbledon either side of his 2008 Queen's title.
"It was an unforgettable year. I am very excited to be playing Queen's again," the 31-year-old Spaniard said.
Five-time champion Andy Murray also intends to return for the tournament.
The British number one, 30, had hip surgery in last month after pulling out of the year's first major, the Australian Open, and has targeted a comeback for the grass-court season.