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 achievement made Bolt one of only two men to win consecutive 200 m world titles, alongside Calvin Smith. Bolt closed the championships with another gold with Jamaica in the 4 × 100 metres relay. Nesta Carter and Michael Frater joined world champions Bolt and Blake to set a world record time of 37.04. Following the World Championships, Bolt ran 9.85 seconds for the 100 m to win in Zagreb before setting the year's best time of 9.76 seconds at the Memorial Van Damme. This run was overshadowed by Jamaican rival Blake's unexpected run of 19.26 seconds in the 200 m