Andy Murray has confirmed he will defend his Queen's Club title at the pre-Wimbledon tournament, allaying fears over a back injury.
Murray practised at Queen's on Saturday and said he was looking forward to starting his grasscourt season in the AEGON Championships following his French Open quarter-final defeat to David Ferrer.
Murray said: "It's great to be back on the grass at the Queen's Club today and I'm looking forward to the AEGON Championships next week.
"It's meant a lot to win the title two out of the last three years and to do well here is always the best possible preparation for me in the lead-up to Wimbledon."
However, world number nine Juan Martin Del Potro has been forced to withdraw from the tournament because of a knee injury.
He said: "I am very disappointed not to be able to play in the AEGON Championships this year, but unfortunately I am not going to be fit enough.
"It is a fantastic event and I wish everyone there a successful tournament. I hope to be back again next year."
Del Potro's withdrawal leaves the field looking one of the weakest in years at Queen's.
Just three of the world's top 10 will now be in attendance with Murray the top seed and Jo-Wilfried Tsonga, as second seed, on course to meet him in the final.
Janko Tipsarevic is the other member of the top 10 involved. He is on Tsonga's side of the draw with Murray slated to meet Gilles Simon in the last four in the top half.
The rival Wimbledon warm-up tournament, the Gerry Weber Open in Halle, looks stronger this season.
It also features three of the world's top 10 but significantly two of those are Rafael Nadal and Roger Federer.
Nadal as opted to play in Germany after criticising UK tax laws which left him not wanting to compete at Queen's, as he has done in the past.
Tomas Berdych will also play at that tournament. He could face Nadal in the semi-finals.