Jamaican sprinter, Usain Bolt is still the fastest man alive. The 100-meter world-record holder today outran Justin Gatlin of US to win the 100-meter run in a thrilling race at the IAAF World Championships in Beijing. The 29 year-old  ran for 9.79 seconds to claim the win. Gatlin finished second in 9.80 seconds. With today’s feat, Bolt has now won the last six international 100-meter championships.