LONDON: Four-time champion Lleyton Hewitt and former top-ranked Marat Safin will play in the Queen's Club tournament, a major warmup for Wimbledon.

Organisers said Thursday that No. 8 Gilles Simon and No. 10 Gael Monfils have also confirmed their entry for the June 8-14 grass-court event.

Top-ranked Rafael Nadal, No. 3 Andy Murray and Andy Roddick had already announced their participation.

Organisers said David Nalbandian had also entered, although he said Wednesday that he may need surgery on a hip injury that would sideline him for at least four months.