With the Court of Arbitration for Sport (Cas), the appeal has been filed.
Knighton, 20, tested positive for trenbolone in March—a prohibited steroid used for muscle growth—but was spared a ban after an impartial arbitrator’s decision.
The independent arbitrator’s decision was most likely made by him eating tainted meat, according to the United States Anti-Doping Agency (Usada).
After competing in the 200-meter world championship, the silver medallist placed fourth in the men’s 200-meter final.
This appeal challenges the ruling of a US arbitration panel that found the athlete not at blame or negligent,” the AIU stated on Wednesday.
CEO of Usada Travis Tygart stated that the “real issue” is the “bad rule” established by the World Anti-Doping Agency (Wada) and that the American body “understands” the AIU’s decision.
“Trenbolone, the substance in Knighton’s case, is a known livestock enhancer and known to be found in the meat supply,” he stated.
