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 100 relay gold from the Beijing Games in 2008 because his teammate Nesta Carter was found guilty of a doping violation. Bolt took a financial stake in a new Australia-based track and field meeting series – Nitro Athletics. He performed at the inaugural meet in February 2017 and led his team (Bolt All-Stars) to victory. The competition featured variations on traditional track and field events. He committed himself to three further editions. In 2017, the Jamaican team was stripped of the 2008 Olympics 4×100 metre title due to Nesta Carter's disqualification for doping offences. Bolt was quoted by the BBC