Travis Tygart will forever be known as the man who brought Lance Armstrong down. The USADA chief executive explains how he has managed to retain his love for sport despite all he’s uncovered

Usain Bolt has hit out at people who make claims about the use of performance enhancing drugs in athletics, and has “lost all respect” for former Olympic champion Carl Lewis.

Seven-time Tour de France winner Lance Armstrong has made furious attacks on former team-mates, the broadcaster CBS and a federal investigator after the latest drug claims against him.

Seven-time Tour de France champion Lance Armstrong has again strenuously denied the latest doping allegations levelled against him by Floyd Landis, in a statement issued on his personal website.

Dwain Chambers took a cocktail of 300 drugs in one year during which time he passed 10 tests, the disgraced sprinter has revealed.

Barry Bonds tested positive for steroids three times in 2000 and 2001, according to hundreds of documents filed by the US government that were released yesterday.

JAMAICAN sprint star Asafa Powell has claimed he has given so much blood to the drugs testers he will not be at his best for the 100 metres final.

Jamaican sprint star Asafa Powell has claimed he has given so much blood to the drugs testers he will not be at his best for the 100 metres final.

The athletics coach at the centre of the BALCO scandal is expected in a United States district court in San Francisco today.

FORMER Olympic sprinter Tim Montgomery has been sentenced to three years and 10 months in prison for his role in a cheque-fraud scheme.

Olympic gold medalist Darren Campbell continues to maintain disgraced sprinter Dwain Chambers cannot be held “solely accountable” for his drug abuse.

Marion Jones has today been sentenced to six months in prison.

International Olympic chiefs have declared their intention to join the fight against illegal betting on sports events.

CLIVE WOODWARD failed to impress Chris Boardman with a single idea to improve Britain’s chances in the 2012 Olympics, the 1992 gold medal-winning cyclist told politicians.

Marion Jones has returned all five Olympic medals she captured during the 2000 Games in Sydney, according to reports in the United States.

IAAF president Lamine Diack believes disgraced American sprinter Marion Jones will be remembered as “one of the biggest frauds in sporting history”.

MARION JONES is expected to plead guilty to using steroids in the build-up to the 2000 Olympic games.

Marion Jones is expected to plead guilty on Friday to using steroids in the build-up to the 2000 Olympic games.

WORLD anti-doping chief Dick Pound has called for Justin Gatlin to be banned for life after confirming the sprinter’s ‘B’ sample had tested positive for testosterone.

The decision to ban American sprinters Tim Montgomery and Chryste Gaines for two years each has been hailed as “a great day for clean athletes” by the head of the United States Anti-Doping Agency (USADA).

Former world record holder Tim Montgomery has been stripped of his American 100 metres record following his two-year drug suspension handed down by the Court of Arbitration.

FORMER 100 metres world record-holder Tim Montgomery and three-time world sprint relay champion Chryste Gaines have been banned for two years after being found guilty of doping offences by the Court of Arbitration for Sport.

World 100m record holder Tim Montgomery and former Olympic champion Marion Jones made little impact on their return to action in Mexico.

KELLI WHITE claimed she was treated “like a guinea pig” for new drugs, according to French paper L’Equipe.

Marion Jones will compete in the Grand Prix Regione Lombardia in Milan on June 1 despite reports she would not be invited to compete in European meetings.

Marion Jones will compete in the Grand Prix Regione Lombardia in Milan on June 1 despite reports she would not be invited to compete in European meetings.

The agent of Marion Jones insists he is not aware of plans to exclude the former triple Olympic champion from European meetings because of links to the Bay Area Laboratory Co-operative (BALCO).

FORMER Olympic and world champion Marion Jones had a dismal return to the track when she finished last over 400metres in her first race of the season.

Former Olympic and world champion Marion Jones had a dismal return to the track when she finished last over 400metres in her first race of the season.

The ex-girlfriend of one of America’s richest, most high-profile baseball stars has told a grand jury that he used steroids, according to reports.

A United States judge has rejected a request to dismiss charges against the main defendants in the Balco steroid case.

Multiple swimming world record holder Ian Thorpe believes athletics would not be embroiled in the ongoing Bay Area Laboratory Co-operative (BALCO) drugs scandal if officials had dealt with the drugs issue earlier.

THE lawyer for Marion Jones has challenged the man who alleged he supplied the former Olympic sprint champion with performance-enhancing drugs to take a lie detector test.

Marion Jones has filed a multi-million euro lawsuit for defamation against the man who alleged he supplied the former Olympic sprint champion with performance-enhancing drugs.

BASEBALL superstar Barry Bonds told a federal grand jury in California that he used substances supplied by the now notorious Bay Area Laboratory Co-operative, or BALCO, but said he never thought they were steroids, according to the San Francisco Chronicle.

Marion Jones has denied new allegations she has used performance-enhancing drugs.

Discredited former world champion sprinter Kelli White has revealed the misery she felt while running as an undetected drug cheat.

Balco founder Victor Conte has vowed to “tell the truth” about drugs in sport in an American television interview on Friday.

World 100 metres record-holder Tim Montgomery has been given a new date for his appeal to the Court of Arbitration over charges of doping violations.

The future of sprinters Tim Montgomery and Chryste Gaines will be decided within the next few weeks after the Court of Arbitration set a date for their drug offence hearings.

The future of sprinters Tim Montgomery and Chryste Gaines will be decided within the next few weeks after the Court of Arbitration set a date for their drug offence hearings.

International Olympic Committee president Jacques Rogge today insisted the Athens Games would not be overshadowed by the rumbling drugs controversies surrounding the high-profile BALCO athletes and unnamed American swimmers.

A lawyer representing American sprinter Marion Jones insists her former husband CJ Hunter “is lying” over claims she used a number of illegal substances during the 2000 Olympics in Sydney.

MARION JONES has outlined her determination to prove wrong the critics who think she is a spent force in athletics.

Olympic 100 and 200 metres champion Marion Jones has withdrawn from tonight’s 200m heats at the US Olympic trials in Sacramento.

HISTORICALLY a meeting with the sparkle and tension of the Olympic Games, this year's US trials, starting today, are a test not only of America's best but of the sport itself.

World 100 metres record-holder Tim Montgomery has decided to bypass the US Anti-Doping Agency’s appeals process and go directly to the highest court in his bid to contest the agency’s decision to seek a lifetime ban for alleged drugs offences.

MARION JONES made an instant exit from yesterday’s Norwich Union British Grand Prix after insisting she has done everything to “clear my name” after being caught up in a drugs scandal in the United States.

USA track stars Tim Montgomery and Michelle Collins have been charged by the United States Anti-Doping Agency, according to the New York Times.