Lance Armstrong

Cyclist Lance Armstrong addresses participants at The LIVESTRONG Challenge Ride at the Palmer Events Center on October 21, 2012, in Austin, Texas. More than 4,000 cyclists participated in the charity ride supporting cancer survivors.

This Monday, Jan. 14, 2013, photo provided by Harpo Studios Inc., shows talk-show host Oprah Winfrey interviewing cyclist Lance Armstrong during taping for the show "Oprah and Lance Armstrong: The Worldwide Exclusive" in Austin, Texas. It was during this interview that Armstrong first admitted to using performance enhancing drugs during his seven Tour de France victories.

Oprah speaks out on Lance Armstrong's doping confession — AP Photo/Courtesy of Harpo Studios, Inc., George Burns

Lance Armstrong during his confessional interview with Oprah Winfrey about his use of performance-enhancing drugs.

Lance Armstrong tweeted this photo of himself on Nov. 10, 2012, appearing to lie on a couch at his Austin home surrounded by his seven Tour de France yellow jerseys. He sent this tweet as the evidence for his use of PEDs during his cycling career mounted.

In this July 22, 2004, file photo, Lance Armstrong, right, climbs the ascent of the La Croix Fry pass as teammate Floyd Landis, left, pours water over his neck during the 17th stage of the Tour de France cycling race between Bourg-d'Oisans and Le Grand Bornand, French Alps. Landis, who was stripped of the 2006 Tour de France title for doping, has filed a federal whistle-blower lawsuit that accused Armstrong of defrauding the U.S. Postal Service amidst doping accusations. The Justice Department has yet to decide whether it will join the suit as a plaintiff.

Lance Armstrong speaks to delegates at the World Cancer Congress in Montreal Wednesday, Aug. 29, 2012.

A Nike Livestrong shirt and poster of cyclist Lance Armstrong are displayed in the window at a NikeTown store May 15, 2009, in San Francisco, California. On Oct. 17, 2012, Nike severed ties with Armstrong, citing insurmountable evidence that he participated in doping and misled the company about those activities for more than a decade. The clothing and footwear company said that it was terminating Armstrong's contract "with great sadness."

Lance Armstrong attends the unveiling of the NIKE+ FuelBand at Highline Stages on Jan. 19, 2012, in New York City.

Lance Armstrong attends the 2011 Pan-Massachusetts Challenge on Aug. 6, 2011, in Bourne, Mass.

Lance Armstrong attends the 2012 Paris Roubaix cycle race from Compiegne to Roubaix on April 8, 2012 in Paris, France. On August 23, 2012, the U.S. Anti-Doping Agency said it will strip Armstrong of his unprecedented seven Tour de France titles after he dropped his fight against drug charges that threatened his legacy as one of the greatest cyclists of all time.

Lance Armstrong of the USA and Team Radio Shack competes during Stage Five of the 2011 Tour Down Under on January 22, 2011, in Adelaide, Australia.

Lance Armstrong is interviewed — AP Photo/Thao Nguyen

Lance Armstrong speaks during an interview in Austin, Texas, Tuesday, Feb. 15, 2011.

Lance Armstrong, founder and chairman of Livestrong Foundation, attends the annual Clinton Global Initiative on Wednesday, Sept. 22, 2010, in New York.

Lance Armstrong of the U.S., left, points as he talks to Luis-Leon Sanchez of Spain, right, during the sixth stage of the Tour de France cycling race, Friday, July 9, 2010.

Lance Armstrong, center, sets the pace for his teammate and overall leader Alberto Contador of Spain, right, as they climb Petit-Saint-Bernard pass during the 16th stage of the Tour de France cycling race over 159 kilometers (98.8 miles) with start in Martigny, Switzerland and finish in Bourg-Saint-Maurice, Alps region, France, Tuesday July 21, 2009. Far left is Andy Schleck of Luxembourg, wearing the white jersey, and second left is Bradley Wiggins of Britain.

Runners and fans jog with Lance Armstrong (center) in midtown Manhattan for a group run in Central Park on October 31, 2009, in New York City.

Andy Schleck of Luxembourg, wearing the best young rider's white jersey, second overall, Tour de France winner Alberto Contador of Spain, wearing the overall leader's yellow jersey, and third overall Lance Armstrong of the U.S., left to right, react on the podium after the 21st stage of the Tour de France cycling race over 164 kilometers (101.9 miles) with start in Montereau-Fault-Yonne and finish in Paris, France, Sunday July 26, 2009.

Lance Armstrong of the U.S. leads the breakaway group as they climb towards Tourmalet pass during the 16th stage of the Tour de France cycling race over 199.5 kilometers (124 miles) with start in Bagneres-de-Luchon and finish in Pau, Pyrenees region, France, Tuesday, July 20, 2010.

Photos: "Tour de France 2010"

Lance Armstrong takes off his sunglasses as it rains during the sixth stage of the Tour de France cycling race over 181.5 kilometers (112.7 miles) with start in Girona and finish in Barcelona, Spain, Thursday July 9, 2009.

Cyclist Lance Armstrong is seen in an ambulance as he arrives at a hospital in Valladolid, Spain, Monday, March 23, 2009. Armstrong fractured his collarbone in a crash during a race, disrupting the seven-time Tour de France champion's comeback.

Lance Armstrong becomes a dad for the fifth time. He and girlfriend Anna Hansen welcomed a baby girl, the seven-time Tour de France champ announced on his Twitter account on Oct. 18, 2010. This was Armstrong's second child with Hansen. The two welcomed son Maxwell Edward on June 4, 2009. Armstrong also has twins Isabella and Grace, 8, and son Luke, 11, with his ex-wife, Kristen.

Cyclist Lance Armstrong, right, speaks to former President Bill Clinton during the opening plenary of the Clinton Global Initiative annual meeting Wednesday, Sept 24, 2008, in New York.

Luke Armstrong, rear right, tries to touch the winner's trophy held by his father Lance Armstrong, after Armstrong won his seventh straight Tour de France in 2005. Armstrong's twin daughters Grace, right, and Isabelle, look on. Armstrong had his three children with former wife Kristen. The couple divorced in 2003.

Lance Armstrong, center, crosses the start line of the 112th Boston Marathon, Monday, April 21, 2008, in Hopkinton, Mass. Armstrong won the Tour de France seven consecutive times before officially retiring from professional cycling on July 24, 2005.

Former cyclist Lance Armstrong runs through Central Park during the ING New York City Marathon on Nov. 5, 2006, in New York. He also ran in the 2007 marathon.

Lance Armstrong warms up prior to the start of the 112th Boston Marathon. Armstrong survived testicular cancer which metastisized to his brain and lungs in 1996.

A U.S. military officer, left, addresses Rachel Smith, second from left, Robin Williams, third from left, Lewis Black, right, Kid Rock, second from right, and Lance Armstrong, third from left, at a U.S base in Kabul, Afghanistan, Thursday, Dec. 20, 2007. Some 500 American soldiers saw the entertainers at a performance in Iraq, part of a six-day, 14-show tour.

This photo provided by CNN shows host Larry King interviewing Lance Armstrong on the secrets of living longer and healthier during a taping of the CNN program "Larry King Live" in Los Angeles, March 28, 2007.

Lance Armstrong watches a drive by one of his playing partners during a practice round of the American Century Celebrity Golf Championship celebrity-amateur event Thursday, July 13, 2006, in Stateline, Nev.

Ben Stiller pretends to beat show host Lance Armstrong with a miniature chair after Armstrong beat him in a thumb wrestling match during the 2006 ESPY Awards in Los Angeles on July 12, 2006. Armstong won ESPN's ESPY Award for best make athlete in 2003, 2004, 2005 and 2006.

Lance Armstrong arrives for amfAR's Cinema Against AIDS 2006 event, during the 59th International Cannes film festival in Mougins, southern France, Thursday, May 25, 2006.

Lance Armstrong is hooded while he receives an honorary doctorate of humane letters during Tufts University's 150th commencement Sunday, May 21, 2006. Armstrong, who delivered the commencement address, was named ABC's Wide World of Sports Athlete of the Year in 1999. Sports Illustrated named him Sportsman of the Year in 2002.

Lance Armstrong, left, and actor Matthew McConaughey, both Texans, celebrate Texas' 41-38 victory over Southern California in the Rose Bowl college football game in Pasadena, Calif., Wednesday, Jan. 4, 2006.

Sheryl Crow, left, arrives with Lance Armstrong at the 33rd annual American Music Awards in Los Angeles on Tuesday, Nov. 22, 2005. The couple announced their engagement in September 2005 and then broke it off in February 2006.

Lance Armstrong holds the winner's trophy after winning his seventh straight Tour de France cycling race, during ceremonies on the Champs-Elysees avenue in Paris, after the 21st and final stage of the race, Sunday, July 24, 2005.

Tour de France winner Lance Armstrong reaches out for someone wearing a yellow "Livestrong" wristband as he rides in a parade in his honor Friday evening, Aug. 13, 2004, in Austin, Texas. Armstrong rode a mountain bike in the parade through downtown Austin, leading a group of cancer survivors toward the main stage. Raised in the Dallas suburb of Plano, Armstrong has made Austin his home for about 15 years.

Lance Armstrong rides past the Eiffel Tower shortly after departing for the prologue stage of the Tour de France cycling race, individual time trial from the Eiffel Tower, through the streets of Paris, to the Ecole Militaire at the foot of the Champ de Mars, Saturday, July 5, 2003.

Lance Armstrong reacts after winning 13th stage of Tour de France, July 17, 2004.

The 2001 Tour de France winner U.S. Lance Armstrong holds his national flag as he makes an honour lap on the 'Champs Elysees' after the last stage in Paris, July 29, 2001.

The 2000 Tour de France winner U.S. Lance Armstrong holds his son Luke in his arms on the podium of the last stage of the French cycling race on the 'Champs Elysees' in Paris on July 23, 2000.

Lance Armstrong celebrates his win during Stage 18 of the Tour De France — Getty Images/Mike Powell

Lance Armstrong (USA), of Team Motorola, celebrates his win during Stage 18 of the Tour De France between Montpon Monesterol and Limoges in France on July 21, 1995.

Lance Armstrong of the U.S. raises his arms after winning the eighth stage of the Tour de France July 11, 1993, in Verdun.