Rafael Nadal has been confirmed as the fifth seed in the men's singles at Wimbledon and could face Britain's Andy Murray in the quarter-finals at SW19 this year.

Despite winning this year's French Open Nadal has been ranked outside the top four, making way for his fellow Spaniard David Ferrer, who he beat in the final at Roland Garros.

Murray, the world No2, was not expected to drop a place in the seedings and is ranked second behind Novak Djokovic and ahead of the defending champion, Roger Federer.

Nadal, Wimbledon champion in 2008 and 2010, had been out of the game for seven months with a knee injury and his absence, as well as a defeat last year to the outsider Lukas Rosol in the second round, caused him to slip behind Ferrer.

Serena Williams, the defending champion, has been seeded first in the women's draw in front of Victoria Azarenka, Maria Sharapova and Agnieszka Radwanska.

Mike and Bob Bryan are top seeds in the men's doubles with last year's champion Jonathan Marray ranked ninth alongside his new partner Colin Fleming.

Men's singles (top 20):

1 Novak Djokovic (Ser)

2 Andy Murray (GB)

3 Roger Federer (Swi)

4 David Ferrer (Sp)

5 Rafael Nadal (Sp)

6 Jo-Wilfried Tsonga (Fr)

7 Tomas Berdych (Cz)

8 Juan Martín del Potro (Arg)

9 Richard Gasquet (Fr)

10 Marin Cilic (Cro)

11 Stanislav Wawrinka (Swi)

12 Kei Nishikori (Jpn)

13 Tommy Haas (Ger)

14 Janko Tipsarevic (Ser)

15 Nicolás Almagro (Sp)

16 Philipp Kohlschreiber (Ger)

17 Milos Raonic (Can)

18 John Isner (US)

19 Gilles Simon (Fr)

20 Mikhail Youzhny (Rus)

Women's singles (top 20):

1 Serena Williams (US)

2 Victoria Azarenka (Blr)

3 Maria Sharapova (Rus)

4 Agnieska Radwanska (Pol)

5 Sara Errani (It)

6 Li Na (Chn)

7 Angelique Kerber (Ger)

8 Petra Kvitova (Cz)

9 Caroline Wozniacki (Den)

10 Maria Kirilenko (Rus)

11 Roberta Vinci (It)

12 Ana Ivanovic (Ser)

13 Nadia Petrova (Rus)

14 Samantha Stosur (Aus)

15 Marion Bartoli (Fr)

16 Jelena Jankovic (Ser)

17 Sloane Stephens (US)

18 Dominika Cibulkova (Svk)

19 Carla Suárez Navarro (Sp)

20 Kirsten Flipkens (Bel)