Manteo Mitchell felt the pop in his leg and knew it wasn't good. "It felt like somebody literally just snapped my leg in half," he said. The American sprinter had half a lap to go in the first leg of the 4x400-meter relay preliminaries Thursday and a choice to make: keep running or stop and lose the race. To him, it was never much of a choice. He finished the lap and limped to the side to watch the Americans finish the race and qualify easily for the final. A few hours later, doctors confirmed what he suspected: He had run the last 200 meters with a broken left fibula. "I heard it and I felt it," Mitchell told The Associated Press. "But I figured it's what almost any person would've done in that situation. Read more: http://espn.go.com/olympics/summer/...itchell-finishes-4x400-meter-relay-broken-leg
