World athletics' governing body, the IAAF, announced that it would not appeal the reduced one-year sanction for doping served by American sprinter Tyson Gay.
Gay was banned in June 2013 after testing positive for a banned anabolic steroid in two out-of-competition tests.
His ban, which was reduced from two years by the United States Anti-Doping Agency (Usada) due to Gay's cooperation, ended on June 23.
And the IAAF said Thursday that it would not appeal the reduced sanction.
“After careful review of the full file provided by Usada, the IAAF has decided that the one-year sanction applied in the case of Tyson Gay was appropriate under the circumstances and in accordance with IAAF Rules,” the body said in a statement.
“Consequently, the IAAF decided not to exercise its right of appeal. The IAAF will not make further comments on the content and merits of the assistance provided by the athlete.”
As well as the one-year sanction, Gay was stripped of his silver medal won as part of the USA 4x100m relay team at the London Olympics.
The sprinter, a triple world champion in 2007 (100m, 200m, 4x100m) and the second fastest man of all time over 100m behind Jamaican legend Usain Bolt, will now compete at the Diamond League meet in Lausanne on July 3 and Montreuil, France, four days later.
Theoretically, he could also take part in the US national championships that start Thursday in Sacramento, California, and run through the weekend.