Four-time winner Lleyton Hewitt and Britain's James Ward have been handed wildcards for the Aegon Championships at Queen's Club.
Hewitt, the world number 175, won at Queen's in 2000, 2001, 2002 - the same year he won Wimbledon - and 2006.
The 31-year-old Australian has just returned from foot surgery and was also given a wildcard for the French Open.
Ward, the British number two behind Andy Murray, enjoyed a memorable run to the semi-finals last year.
"It's been one of my favourite tournaments throughout my career and to be alongside John McEnroe, Boris Becker and Andy Roddick in having won the title four times is a thrill," said Hewitt.
"It's going to be great to come back after my injury and go straight out onto the best grass courts in the world and then hopefully have Wimbledon to look forward to after that. I can't wait."
Ward narrowly missed out on making it an all-British final against Murray when he was beaten by Jo-Wilfried Tsonga last year.
"Reaching the semi-finals last year was a fantastic experience, the best of my career so far," said the 25-year-old.
"I'm going to give it everything I've got to try to make the most of what is a great opportunity."
Hewitt and Ward join six of the world's top 12 players in the singles field, with Andy Murray (fourth), Tsonga (fifth), Janko Tipsarevic (eighth), Juan Martin del Potro (ninth), Mardy Fish (10th) and Gilles Simon (12th) all entered. Roddick, is also in the field.
A further three wildcards will be announced before the singles draw is made on Saturday, 9 June.