Australian cyclist Mark French has had his two-year suspension for doping offences overturned by the Court of
Arbitration for Sport (CAS).
The CAS dismissed the seven charges - made after cleaners found syringes and phials outside the 20-year-old's room - because of a lack of evidence.
French denied the claims, blaming five of his team-mates.
The Australian Olympic Committee (AOC) has also rescinded its lifetime ban on French competing at the Games.
"The AOC recognises and respects the CAS appeal decision in which it was found that the ASC (Australian Sports Commission) and CA (Cycling Australia) had failed to prove Mark French had committed any doping offence," said AOC president John Coates.
"Accordingly, it automatically follows that Mark French cannot be, and is no longer subject to, any sanction under the AOC Anti-Doping By-Law."