Usain Bolt Bolt was named IAAF World Male Athlete of the Year. An injury to Bolt's hamstring in March 2014 caused him to miss nine weeks of training. Having recovered from surgery, Bolt competed in the 4 × 100 metres relay of the 2014 Commonwealth Games in Glasgow. Not in peak form Bolt said that he was attending the Games for the fans and to show his progress since the injury. Bolt and his teammates won the 4 × 100 metres relay in 37.58 seconds – a Commonwealth Games record. This was the foremost competition of the year for Bolt, given no
Usain Bolt in the sport. From his record time of 9.58 s for the 100 m sprint, Usain Bolt's average ground speed equates to . However, once his reaction time of 0.148 s is subtracted, his time is 9.44 s, making his average speed . Bolt's top speed, based on his split time of 1.61 s for the 20 metres from the 60- to 80-metre marks (made during the 9.58 WR at 100m), is 12.42 m/s (). "World rank in parentheses" Usain Bolt Usain St Leo Bolt (; born 21 August 1986) is a Jamaican retired sprinter and world record holder in