Nadal, Murray head Queen's line-up

Spain's world number one Rafael Nadal heads what organisers say is the most formidable line-up for Queen's, the historic grass tournament in London that is a key warm-up event for Wimbledon.

Aside from Nadal and five others from the present top 10 the tournament is likely to see Britain's two-time Wimbledon champion Andy Murray -- a five-time winner of the Queen's title -- play as he makes a comeback after hip surgery.

Australian firebrand Nick Kyrgios and Switerland's Stan Wawrinka -- who needs the Wimbledon title to complete a sweep of Grand Slam titles -- have also confirmed they will play as will last year's champion Feliciano Lopez.