United States' Ryan Bailey, left, receives the baton from United States' Tyson Gay, second from left, as Jamaica's Usain Bolt, second from right, receives the baton from Jamaica's Yohan Blake in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Matt Dunham)