 The year 2005 signaled a fresh start for Bolt in the form of a new coach , Glen Mills , and a new attitude toward athletics . Mills recognised Bolt 's potential and aimed to cease what he considered an unprofessional approach to the sport . Bolt began training with Mills in preparation for the upcoming athletics season , partnering with more seasoned sprinters such as Kim Collins and Dwain Chambers . The year began well , and in July , he knocked more than a third of a second off the 200 m CAC Championship record with a run of 20 @.@ 03 s , then registered his 200 m season 's best at London 's Crystal Palace , running in 19 @.@ 99 s . 
