Tyson Gay receives a one - year ban for doping violation . Sprinter Gay tested positive for an anabolic steroid in 2007 . That included his silver medal in the U.S. men 's 4x100m relay squad at the London Games , where they finished second to Bolt 's all-conquering Jamaican team . Gay shortened suspension for co - operating with authorities . Gay won gold in triple at 2007 World Championships .
Tyson Gay receives a one - year ban for doping violation . Sprinter Gay tested positive for an anabolic steroid in 2007 . Gay shortened suspension for co - operating with authorities . Gay won gold in triple at 2007 World Championships .