The men's 100-meter sprint is one of the most highly-anticipated and exciting track and field events in the Olympics, and this year there are five men who have a legitimate chance to win the gold medal.
Usain Bolt is the defending champion, but he'll have to fend off the likes of Yohan Blake, Tyson Gay, Asafa Powell and Justin Gatlin to win another gold medal and maintain his title as the fastest man in the world.
All five men ran well in the semifinals, though it's worth pointing out that Bolt didn't even have to try to post his time of 9.87 seconds. He literally jogged after about two-thirds of the way through his heat.
With that in mind, here are the gold-medal odds for each of these five men.