Clay won the gold medal at the 2008 Olympics in the decathlon. His victory margin of 240 points in the 2008 Beijing Olympics was the largest since 1972. The Olympic decathlon champion is referred to as the "World's Greatest Athlete" and prior to the Olympics, Clay was tested by SPARQ to establish his SPARQ Rating across a number of different sports. The test is meant to measure sport-specific athleticism and in the football test Clay recorded a score of 130.40, the highest ever recorded up to that point. By comparison, Reggie Bush scored a 93.38 on the popular test.