Famed cyclist Lance Armstrong could lose his seven Tour de France titles after giving up his fight against charges leveled by the U.S. Anti-Doping Agency.
But there's a question of whether the agency has authority in the case and whether international agencies might have to weigh in before Armstrong would face the prospect of losing his titles.
Birth date:Â Â Â Â Â September 18, 1971
Birthplace:Â Â Â Â Plano, Texas
Parents:Â Â Â Â Â Â Â Â Â Â Linda Walling and Terry Armstrong, who adopted him
Marriage:Â Â Â Â Â Â Â Â Kristin Richard (1998-2003, divorced)
Children: Â Â Â Â Â Â Â Max, Olivia Marie, Luke, Isabelle Rose and Grace Elizabeth
Education:Â Â Â Â Â Bending Oaks High School, Dallas, 1989
Armstrong has always denied taking performance-enhancing drugs.
He credits his mother, Linda, a single parent, for much of his success.
In his teens, Armstrong began competing in triathlons and other sporting events.
1987 - At 16, he becomes a professional triathlete.
1988-1989 - While still a senior in high school, he trains with U.S. Olympic cycling team.
1989 - He's named to the U.S. National Cycling Team.
1991 - He becomes U.S. national amateur champion.
1992 - Competes in the Summer Olympics in Barcelona, Spain. He turns pro immediately after the Olympics.
1993 - Wins 10 titles, including the World Champion and U.S. PRO Champion. Wins a stage of the Tour de France but cannot complete the race.
1993 - Wins the Thrift Drug Triple Crown.
1995 - Wins a stage in the Tour de France. Finishes 36th, finishing the race for the first time.
1996 - Drops out of the Tour de France after being diagnosed with bronchitis. Finishes 12th in the road race at the Atlanta Summer Olympics. Signs with France's Team Cofidis.
October 1996 - Is diagnosed with testicular cancer. The cancer had spread to his lungs, lymph nodes, abdomen and brain.Â Undergoes surgery to have the malignant testicle removed.
October 1996 - Undergoes surgery to remove two cancerous lesions from his brain.
December 1996 - Doctors tell him he is cancer-free.
1997 - Establishes the Lance Armstrong Foundation to benefit cancer research and cancer patients.
1999 - Wins the Tour de France riding with the U.S. Postal Team.
2000Â - Wins the Tour de France for a second consecutive year.Â Paris anti-doping squad opens investigation into whether the U.S. Postal Team used performance-enhancing drugs during the race.
2001 - Wins the Tour de France for the third time.
2002 - Wins his fourth consecutive Tour de France.
2002 - A 21-month investigation into whether the U.S. Postal Team used performance-enhancing drugs during the 2000 Tour de France closes after finding no evidence of illegal drug use.
2003 - Wins his fifth consecutive Tour de France.
June 15, 2004 - Announces he is suing the author of a book accusing him of taking performance-enhancing drugs.
June 21, 2004 - A Paris court throws out a request by Armstrong for an emergency ruling ordering the publishers of a book detailing suggestions of doping to insert a denial by Armstrong.
July 25, 2004 - Wins his sixth consecutive Tour de France.
April 2005 - Announces he will retire after competing in the 2005 Tour de France.
July 2005 - Wins his seventh Tour de France.
2006 - A report from the International Cycling Union is released that clears Armstrong's name of doping allegations from 1999.
2008 - Announces his return to professional cycling.
March 2009 - Falls with other riders during a race in Spain and breaks his collarbone.
July 2009 - Armstrong comes in third place in the Tour de France.
May 20, 2010 - Crashes during the Amgen Tour of California and taken to a hospital. The same day he denies allegations of doping made by former teammate Floyd Landis.
July 3, 2010 - Begins what Armstrong announces will be his last Tour de France.
July 21, 2010 - Hires a defense lawyer to represent him in a federal investigation into allegations of fraud and doping.
July 25, 2010 - Armstrong comes in 23rd place in what he says will be his final Tour de France.
February 16, 2011 - Armstrong announces his retirement from the world of professional cycling,Â saying he wants to devote more time to his family and the fight against cancer.
February 3, 2012 - Justice Department prosecutors announce they are closing a criminal probe of Armstrong without filing charges after reviewing allegations.
June 12, 2012 - The U.S. Anti-Doping Agency notifies Armstrong of an investigation into new doping charges. In response, Armstrong says the agency intends to "dredge up discredited" doping allegations against him in a bid to strip him of his seven Tour de France victories.
June 29, 2012 - The U.S. Anti-Doping Agency announces it has filed doping charges against Armstrong.Â Armstrong's attorney calls the decision to charge "wrong" and "baseless."
July 9, 2012 - Armstrong files a lawsuit in federal court in Texas to halt the doping case against him.Â The suit asks the court to file an injunction against the U.S. Anti-Doping Agency by July 14, a deadline the agency stipulated for Armstrong to agree to contest the charges or accept sanctions. Hours later, U.S. District Judge Sam Sparks dismisses Armstrong's lawsuit. In a sharply worded ruling, the judge says Armstrong's 80-page complaint is full of legally irrelevant claims. The judge urges Armstrong to refile without "any improper argument, rhetoric, or irrelevant material."
July 10, 2012 - Armstrong refiles the lawsuit.Â The complaint is substantially shorter than the original, and Armstrong again asks the court to file an injunction against the U.S. Anti-Doping Agency by July 14.
July 11, 2012 - Armstrong drops his request for a temporary restraining order against the U.S. Anti-Doping Agency and awaits a ruling on the merits of his lawsuit.
August 20, 2012 - A federal judge dismisses Armstrong's lawsuit against the U.S. Anti-Doping Agency.
August 24, 2012 - The U.S. Anti-Doping Agency says it will strip Armstrong of his seven Tour de France titles and impose a lifetime ban, a move that came after the cyclist announced he would no longer fight charges of illegal doping.
More on Armstrong: