"You should be able to run 100 meters like a horse in the Kentucky Derby with blinders on," Boldon says. "Nothing in the 100 should ever cause a sprinter to look to his left or right." Boldon ...

The graph below shows the progression of gold medalists' times for the 100-meter sprint since 1896. Use the zoom controls at the top right to get a closer look, and hover over the points to learn ...