In 2010, with the doping allegations still ongoing, Ullrich was diagnosed with burn-out, and avoided public appearances for a few months.

It was to protect this operation that the press were not given a full briefing when the recent doping allegations were made.

And now, with several American track and field athletes facing doping allegations, the shot-putters may be more misunderstood than ever.

For years, Armstrong has also professed his innocence in the face of doping allegations.

In 2003 a doping allegation surfaced in which Museeuw was implicated.

Landis would be the first champion in the Tour's 103-year history to be stripped of his title because of doping allegations.

Dekker's career has been marked by other doping allegations.

Furthermore, the doping allegations also resulted in several team sponsors threatening to retire their support if events advanced further.

Despite Petacchi's positive result prior to the Tour prologue, the first stages were uneventful in terms of doping allegations.

It was not until Stage 8 before the first doping allegations surfaced against one of the participants.