Usain Bolt push Bolt to do longer sprinting distances with the aim of making the 400 m event his primary event by 2007 or 2008. Bolt was less enthusiastic, and demanded that he feel comfortable in his sprinting. He suffered another hamstring injury in March 2006, forcing him to withdraw from the 2006 Commonwealth Games in Melbourne, and he did not return to track events until May. After his recovery, Bolt was given new training exercises to improve flexibility, and the plans to move him up to the 400 m event were put on hold. The 200 m remained Bolt's primary event
Usain Bolt American had times of 9.74 and 19.57 seconds, and had already run under 9.8 seconds on four occasions that season. Bolt entered the World Championships to defend his sprint titles but was not the comfortable favourite he had been since 2008. In the World Championships 100 m, Bolt won his semi-final in 9.96, which lagged Gatlin's semi-final win in 9.77 seconds. However, Gatlin did not match that form in the final while Bolt improved through the rounds. In a narrow victory, Bolt leaned at the line to beat Gatlin 9.79 to 9.80 seconds. Bolt joined Carl Lewis and Maurice Greene