Former 100m world record holder Asafa Powell retires at age 40

Jamaica’s Asafa Powell broke the men’s 100m world record four times during his 20-year career

The all-time men’s 100m list with names associated with doping crossed off

Lots of red in terms of names associated with doping and suspensions when it comes to the all-time men’s 100m list

VIDEO: Usain Bolt dominates first individual sprint race of 2017

Watch as Usain Bolt, an eight-time Olympic champion, dominates the 150m at the third of three events as part of the Nitro Athletics series in Australia.