African power: Tunisia's Ous Mellouli comes into play defeating the world swimming powers

Ous Mellouli, representing the small African nation of Tunisia, pulled off a huge upset in the 1,500-meter freestyle, defeating Australia's two-time defending champ Grant Hackett to win his country's first swimming gold medal.Mellouli finished in 14 minutes, 40.84 seconds to defeat Hackett, the world record holder, who took the silver in 14:41.53. Ryan Cochrane of Canada took the bronze in 14:42.69. In a sign of the globalization of the sport of swimming, Mellouli is the second African to win a swimming gold at these Olympics, following Zimbabwe's Kirsty Coventry in the 200-meter backstroke.