Both Team Jamaica's Usain Bolt and Yohan Blake ranked in first place in their semifinal heats, guaranteeing them a spot in the finals. Warren Weir, also from Jamaica, came in second in his heat but still qualified to move on because of his impressive score of 20.28, only 11 seconds behind first placeman Churandy Martina.

Allyson Felix Wins Gold in 200M Final [PHOTOS[

The 200-meter finals, airing on Aug. 9, will be nothing new for Bolt. He won gold for the same event in the 2008 Beijing Olympics. The record holder finished the semifinals with a time of 20.18 seconds but Blake finished with 20.01. Bolt's main rival lies in Blake, who clocked the second-fastest 200-meter time in 2011 and desperately wants to win a London gold medal after coming in with the silver in the men's 100-meter finals.

Both competitors are familiar with the 200-meter mark and are pushing hard to claim the gold medal this year.

The 200-meter is the only Olympic competition Warren Weir will race in during the London Games. A newbie to the Olympics, he will have to muster up a good amount of stamina and speed to even brush against his fellow Jamaican competitors at the finals.

Watch them all compete for the gold on Aug. 9 free on NBC's site for the Olympic Games. You can also catch replays of the semifinals, provided by NBC.

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Sprint, London games, Nbc live streaming