Usain Bolt once again proved his dominance in the sprinting world by attaining his second 100 meter gold medal. 

This year the 25-year-old Jamaican sprinter successfully defended his Olympic gold medal from the 2008 Beijing Olympics. In the 2008 Games, Bolt ran the race in 9.69 seconds and set both an Olympic and world record at the time. Bolt even managed to break his own 9.69 second world record again at the 2009 Berlin World Championships, lowering the time to a staggering 9.58 seconds. 

This time around in London, Bolt did not manage to break his own world record again, but still set another Olympic record for the 100 meter race with an official time of 9.63 seconds. Bolt's first victory in London sets up the possibility for his second gold medal sweep in the 100, 200, and 4x100 meter races. 

While Bolt swept the three races with relative ease in the 2008 Olympics, he has much tougher competition this time around. Fellow Jamaican sprinter Johan Blake has looked like the favorite to win the 200 meter race after an eye-opening semifinal finish. 

Blake managed to win the 200 meter semis after clearly not giving it his all in the last 20 meters of the race. Winning the race with a time of 20.18 seconds in a nonchalant fashion gives many a reason to believe that Blake has a solid chance to beat the defending 200 meter gold medalist. 

Bolt's 200 meter world record time stands 19.19 seconds, compared to Blake's personal best of 19.26 seconds. Blake's second place finish in the 100 meter behind Bolt earned the Jamaicans both gold and silver. If Bolt and Blake finish on top again, the Jamaicans will need to win the 4x100 meter race to produce one the greatest collective team performances in Olympic history.