The International Olympic Committee officially upgraded Trinidad and Tobago and France’s 4x100m relay teams to silver and bronze, respectively, after the U.S. team was stripped of its silver medal in May.
Tyson Gay tested positive for a banned substance in May 2013 and all his results between then and July 15th, 2012, when the U.S. Anti-Doping Agency found he first used a prohibited substance, were annulled. This included the 2012 London Olympics, where he won silver as a member of the U.S. 4x100m relay team.
He also served a one-year suspension, which ended in June 2014.