美国狙击手Erriyaon Knighton因呈阳性的类固醇测试被禁四年。 US sprinter Erriyon Knighton banned for four years due to a positive steroid test.

美国Sprester Erriyaon Knighton, 21, 已被禁止竞争四年, US sprinter Erriyon Knighton, 21, has been banned from competition for four years after testing positive for the banned substance trenbolone, an anabolic steroid. Knighton最初声称,阳性测试是肉类污染造成的,但体育仲裁法院维持WADA和世界运动员协会的上诉,驳回了他的申诉。 Knighton initially claimed the positive test was due to meat contamination, but the Court of Arbitration for Sport upheld appeals from WADA and World Athletics, rejecting his claim. 该禁令立即生效,将他排除在2028年洛杉矶奥运会之外。 The ban takes effect immediately, ruling him out of the 2028 Los Angeles Olympics.