Jamaica's Usain Bolt, left, celebrates winning the gold medal in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (Ap photo)

Usain Bolt kisses the finish line after winning the men's 200 meters at the Summer Olympics in London on Thursday. (AP photo)

Usain Bolt poses after his win in the men's 200 meters at the Summer Olympics in London. (AP photo)

Usain Bolt celebrates winning the men's 200-meter final during the athletics in the Olympic Stadium. (AP photo)

Usain Bolt, center, takes photographs after he won gold in the men's 200-meter final during the athletics in the Olympic Park. (AP photo)

Usain Bolt, left, gestures as he stands on the podium after receiving his gold medal for the men's 200-meter, alongside silver medallist Jamaica's Yohan Blake, right, during the athletics in the Olympic Stadium. (AP photo)

Usain Bolt holds up his gold medal for the men's 200-meter during the athletics in the Olympic Stadium. (AP photo)

Usain Bolt is flanked by his teammates silver medal winner Yohan Blake, left, and bronze medalist Warren Weir during the ceremony for the men's 200-meter final during the athletics. (AP photo)

Usain Bolt, left, and United States' Wallace Spearmon fist bump prior to the start of the men's 200-meter final during the athletics. (AP photo)

Usain Bolt, center, celebrates after winning gold alongside silver medalist Yohan Blake of Jamaica, left, following the men's 200-meter final during the athletics. (AP photo)

Usain Bolt celebrates his gold medal win in the men's 200-meter final during the athletics in the Olympic Stadium. (AP photo)

Usain Bolt starts off the blocks in the men's 200-meter final during the athletics in the Olympic Stadium. (AP photo)

Usain Bolt races to his gold medal finish in the men's 200-meter final during the athletics in the Olympic Stadium. (AP photo)

Usain Bolt celebrates as he crosses the finish line for a gold medal win in the men's 200-meter final during the athletics. (AP photo)

Usain Bolt, center, celebrates with his teammate Warren Weir, left, and Yohan Blake after the men's 200-meter final during the athletics. (AP photo)