Usain Bolt wins gold in men's 100-meter at the 2012 Summer Olympics
Bolt takes home his second-straight gold medal for Jamaica in the 100 meters. Carl Lewis is the only other man to win back-to-back in the race.
Yohan Blake of Jamaica snags the silver with a time of 9.75 seconds, and Justin Gatlin of the United States wins the bronze with a time of 9.79 seconds. Tyson Gay and Ryan Bailey of the United States finish fourth (9.80) and fifth (9.88) respectively.
Jamaica also won the gold for the women's 100-meter dash on Saturday when Shelly-Ann Fraser-Price bested her competitors.