(CNN) -- Defending champion Roger Federer has been named as the top seed for the men's singles at Wimbledon despite losing his world number one ranking to arch-rival Rafael Nadal.
Spain's Nadal claimed back top spot from Federer when he won his fifth French Open crown last month, but will be second seed when the championships begin at the All England Club next Monday.
Nadal was unable to defend the title he won in 2008 through injury but is now back to his best after a dominant clay court season.
Wimbledon is the only grand slam which does not strictly follow the ATP world rankings when deciding the seedlings, taking into account performances in grass court tournaments before making their decision.
It means Lleyton Hewitt, who shocked Federer in the final of the Halle tournament in Germany on Sunday, is seeded 15th against his world ranking of 26.
Queen's Club winner Sam Querrey moves up to 18th from 21st while his fellow American Andy Roddick is seeded fifth against a world ranking of seventh.
Roddick lost in a five-set epic to Federer in last year's Wimbledon final. Novak Djokovic of Serbia and home hope Andy Murray are seeded third and fourth.
In the women's singles, defending champion and world number one Serena Williams is top seed, with her sister Venus seeded second as the list strictly follows the WTA rankings.
With world number five Elena Dementieva of Russia pulling out through injury, U.S. Open champion Kim Clijsters is seeded eighth and her Belgian compatriot Justine Henin 17th, one below 2004 champion Maria Sharapova.