...match of the Monte Carlo Tennis Masters tournament in Monaco, Thursday, April 16, 2009. Federer lost to Olympic gold-medal doubles partner Stanislas Wawrinka 6-4, 7-5 Thursday (AP Photo/Lionel Cironneau

...John Fahey (R) and WADA director general David Howman speaks during a WADA Media Symposium at the Olympic Museum on February 24, 2008 in Lausanne. WADA chiefs ruled out immediate changes to out of competition...

...the United States during their quarter-final match of the 2008 Hansol Korea Open tennis tournament at Olympic Park in Seoul, South Korea, Friday, Sept. 26, 2008. Craybas won the match 6-2, 7-5...

...match against Elena Dementieva of Russia during day five of the 2009 Medibank International at the Sydney Olympic Park Tennis Centre on January 15, 2009 in Sydney, Australia

...match against Elena Dementieva of Russia during day five of the 2009 Medibank International at the Sydney Olympic Park Tennis Centre on January 15, 2009 in Sydney, Australia

...Final against Dinara Safina of Russia during day six of the 2009 Medibank International at the Sydney Olympic Park Tennis Centre on January 16, 2009 in Sydney, Australia. (Photo by Matt King/Getty Images

...match against Lleyton Hewitt of Australia during day five of the 2009 Medibank International at the Sydney Olympic Park Tennis Centre on January 15, 2009 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images

...match against Sam Stosur of Australia during day one of the 2009 Medibank International at the Sydney Olympic Park Tennis Centre on January 11, 2009 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images

...serve against Samantha Stosur of Australia during day five of the 2008 Hansol Korea Open at Seoul Olympic Park Stadium on September 24, 2008 in Seoul, South Korea

...Vera Zvonareva pose together after receiving their medals from the Women's Singles event held at the Olympic Green Tennis Center during Day 9 of the Beijing 2008 Olympic Games on August 17, 2008 in...

3 Panel-French Open, Wimbledon & Olympics

...Juan Carlos Ferrero and Rafael Nadal listen to ta speech during a promotional tour for the 2012 Olympics Madrid's candidacy, 07 December 2004. AFP PHOTO/ Pedro ARMESTRE (Photo credit should read PEDRO ARMESTRE/AFP...

...Russia serves to Dinara Safina of Russia during day five of the Kremlin Cup Tennis at the Olympic Stadium on October 10, 2008 in Moscow, Russia. (Photo by Julian Finney/Getty Images

...reacts during day three of the Kremlin Cup Tennis match against Sara Errani of Italy at the Olympic Stadium on October 08, 2008 in Moscow, Russia. (Photo by Dima Korotayev/Epsilon/Getty Images

...on during day five of the Kremlin Cup Tennis match against Dinara Safina of Russia at the Olympic Stadium on October 10, 2008 in Moscow, Russia. (Photo by Dima Korotayev/Epsilon/Getty Images