LONDON (AP)—Rafael Nadal will return to Queen’s this year after he was unable to defend his title at the grass-court tournament in 2009.

In 2008, Nadal was the first man to win at the French Open, Queen’s Club and Wimbledon in the same year, but his persistent knee problems prevented him from defending his titles on grass at Queen’s and Wimbledon last year.

He says there is now more motivation for him this year because he could not defend those titles. Nadal also says not being able to play at Wimbledon in 2009 was one of the toughest decisions of his career.

U.S. Open champion Juan Martin del Potro has also announced his intention to play in June at Queen’s, the traditional men’s warm-up event ahead of Wimbledon.

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