London Olympics Athletics Men

Jamaica's Usain Bolt (right) and American Ryan Bailey head to the finish line in the men's 4x100 relay. (AP Photo/Matt Dunham)

Jamaica’s Usain Bolt (right) and American Ryan Bailey head to the finish line in the men’s 4×100 relay. (AP Photo/Matt Dunham)

Jamaica’s Usain Bolt and Ryan Bailey of the United States during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Matt Dunham)