Jamaica's Yohan Blake, Usain Bolt, Nesta Carter, and Michael Frater pose with their national flag after their gold medal win in the men's 4 x 100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds.(AP Photo/Anja Niedringhaus)