Venus Williams of USA celebrates after beating her sister Serena in the Women's Singles Final, during the 2008 Wimbledon Championships in London on July 5. Nine-time Wimbledon champion Martina Navratilova believes that Williams's fifth All England Club title proves that the women's tour is in good health.

This aerial file photo shows Centre Court (front) and Court No. 1 at The All England Tennis Club in Wimbledon. Roger Federer and Rafael Nadal, tennis's glittering top of the bill double act, clash in a third successive Wimbledon final on Sunday to determine who is the world's best player.

Lisa Raymond (R) of USA and Samantha Stosur of Australia pose with their trophies after losing 2-6, 2-6, to Venus and Serena Williams in the Women's Doubles Final during the 2008 Wimbledon Championships at the All England Tennis Club in south-west London, July 5, 2008. AFP PHOTO/GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)

Venus (R) and Serena Williams celebrate a point against Lisa Raymond of USA and Samantha Stosur of Australia, in the Women's Doubles Final during the 2008 Wimbledon Championships at the All England Tennis Club in south-west London, July 5, 2008. AFP PHOTO/GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)

Lisa Raymond right, of the US and Australia's Samantha Stosur hold their runnerup trophies aloft after losing the women's doubles final against Venus and Serena Williams of the US on the Centre Court at Wimbledon, Saturday, July 5 , 2008.

Venus (L) and Serena Williams celebrate a point against Lisa Raymond of USA and Samantha Stosur of Australia, in the Women's Doubles Final during the 2008 Wimbledon Championships at the All England Tennis Club in south-west London, July 5, 2008. AFP PHOTO/GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)

Venus Williams left, of the US and her sister Serena hold their trophies after winning the women's doubles final against Lisa Raymond of the US and Australia's Samantha Stosur on the Centre Court at Wimbledon, Saturday, July 5 , 2008.

Venus Williams outhit younger sister Serena to claim her fifth Wimbledon crown in exhilarating fashion. The defending champion recovered from a whirlwind start by her younger sister to land her seventh Grand Slam title courtesy of a 7-5, 6-4 win.

Venus Williams of the US and her sister Serena during the women's doubles final against Lisa Raymond of the US and Australia's Samantha Stosur on the Centre Court at Wimbledon, Saturday, July 5 , 2008.

Serena Williams right, and her sister Venus embrace after their win in the Women's Doubles final against Australia's Samantha Stosur and Lisa Raymond of the US on the Centre Court at Wimbledon, Saturday, July 5, 2008.

LONDON - JULY 05: Laura Robson of Great Britain celebrates with the trophy after winning the girl's singles Final match against Noppawan Lertcheewakarn of Thailand on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Clive Brunskill/Getty Images)

Venus Williams left, of the US and her sister Serena hold their trophies aloft after winning the women's doubles final against Lisa Raymond of the US and Australia's Samantha Stosur on the Centre Court at Wimbledon, Saturday, July 5 , 2008.

LONDON - JULY 05: Venus Williams of United States and Serena Williams of United States celebrate match point and winning the women's doubles Final match against Lisa Raymond of United States and Samantha Stosur of Australia on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Clive Brunskill/Getty Images)

Venus (L) and Serena Williams celebrate after beating Lisa Raymond of USA and Samantha Stosur of Australia 6-2, 6-2, in the Women's Doubles Final during the 2008 Wimbledon Championships at the All England Tennis Club in south-west London, July 5, 2008. AFP PHOTO/GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)

Serena Williams right, and her sister Venus celebrate after their win in the women's doubles final against Australia's Samantha Stosur and Lisa Raymond of the US at Wimbledon, Saturday, July 5, 2008.

LONDON - JULY 05: Venus Williams of United States and Serena Williams of United States celebrate with the trophy winning the women's doubles Final match against Lisa Raymond of United States and Samantha Stosur of Australia on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Clive Brunskill/Getty Images)

Serena Williams, left, and her sister Venus celebrate after their win in the Women's Doubles final against Australia's Samantha Stosur and Lisa Raymond of the US on the Centre Court at Wimbledon, Saturday, July 5, 2008.

Serena Williams left, and her sister Venus celebrate after their win in the women's doubles final against Australia's Samantha Stosur and Lisa Raymond of the US at Wimbledon, Saturday, July 5, 2008.

LONDON - JULY 05: Venus Williams of United States and Serena Williams of United States celebrate with the trophy winning the women's doubles Final match against Lisa Raymond of United States and Samantha Stosur of Australia on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Ian Walton/Getty Images)

Venus Williams left, of the US and her sister Serena celebrate after winning the women's doubles final against Lisa Raymond of the US and Australia's Samantha Stosur on the Centre Court at Wimbledon, Saturday, July 5 , 2008.

US Venus Williams (R) and her sister Serena celebrate after winning the doubles final tennis match of the 2008 Wimbledon championships against US Lisa Raymond and Australia's Samatha Stosur at The All England Tennis Club in southwest London, on July 5, 2008. Williams sisters won 6-2, 6-2. AFP PHOTO / Adrian Dennis (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

LONDON - JULY 05: Venus Williams of United States and Serena Williams of United States celebrate match point and winning the women's doubles Final match against Lisa Raymond of United States and Samantha Stosur of Australia on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Ian Walton/Getty Images)

LONDON - JULY 05: Venus Williams of United States plays with Serena Williams of United States during the women's doubles Final match against Lisa Raymond of United States and Samantha Stosur of Australia on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Julian Finney/Getty Images)

LONDON - JULY 05: Venus Williams of United States and Serena Williams of United States celebrate match point and winning the women's doubles Final match against Lisa Raymond of United States and Samantha Stosur of Australia on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Julian Finney/Getty Images)

Canada's Daniel Nestor (R) and his Serbian teammate Nenad Zimonjic celebrate with their trophies after winning their doubles final tennis match of the 2008 Wimbledon championships against Sweden's Jonas Bjorkman and Zimbabwe's Kevin Ullyett at The All England Tennis Club in southwest London. Nestor and Zimonjic won 7-6, 6-7, 6-3, 6-3.

Serena, bottom and Venus Williams in action against Lisa Raymond of the US, and Australia's Samantha Stosurduring the Women's Doubles final on the Centre Court at Wimbledon, Saturday, July 5, 2008.

Canada's Daniel Nestor celebrates after he and his partner Serbia's Nenad Zimonjic won the men's doubles final against Sweden's Jonas Bjorkman and Zimbabwe's Kevin Ullyett on the Centre Court at Wimbledon, Saturday, July 5 , 2008.

Canada's Daniel Nestor right, runs to his partner Serbia's Nenad Zimonjic after winning the men's doubles final against Sweden's Jonas Bjorkman and Zimbabwe's Kevin Ullyett on the Centre Court at Wimbledon, Saturday, July 5 , 2008.

LONDON - JULY 05: Lisa Raymond of United States (R) plays with Samantha Stosur of Australia during the women's doubles Final match against Venus Williams of United States and Serena Williams of United States on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Julian Finney/Getty Images)

LONDON - JULY 05: Lisa Raymond of United States (R) plays with Samantha Stosur of Australia during the women's singles Final match against Venus Williams of United States and Serena Williams of United States on day twelve of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2008 in London, England. (Photo by Julian Finney/Getty Images)