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 youth best at the 2003 Pan American Junior Championships. The 400 m time remains No. 6 on the all-time youth list, surpassed only once since, by future Olympic champion Kirani James. Bolt turned his main focus to the 200 m and equalled Roy Martin's world junior record of 20.13 s at the Pan-American Junior Championships. This performance attracted interest from the press, and his times in the 200 m and 400 m led to him being touted as a possible successor to Johnson. Indeed, at sixteen years old, Bolt had reached times that Johnson did not register until he was