USA's LaShawn Merritt, third from left, crosses the finish line to win ahead of South Africa's L.J. van Zyl, second from right, Jamaica's Leford Green, right, Russia's Denis Alekseyev, left, and Germany's Thomas Schneider, second from left, in the men's 4x400-meter relay final at the World Athletics Championships in Daegu, South Korea, on Friday.
Anja Niedringhaus Associated Press