William Collazo Gutiérrez is a Cuban sprinter who specializes in the 400 metres.
William Collazo
Athletics at the 2008 Summer Olympics – Men's 400 metres
The men's 400 metres at the 2008 Summer Olympics took place on 18–21 August at the Beijing National Stadium. Fifty-five athletes from 40 nations competed.
Crossing the finish line
LaShawn Merritt won by a margin of almost a second.