(Reuters) - The International Association of Athletics Federations (IAAF) will not appeal the one-year ban handed down to Tyson Gay for doping which has put the United States's second-place finish in the 4x100 metres relay at the 2012 London Olympics in jeopardy.
Gay, the world's joint second fastest man, was banned for one year following a 2013 positive test for an anabolic steroid and stripped of all results from July 2012.
