Athletics
The pair have fired back and forth on social media after Lyles pulled out of a 50-yard race.
Usain Bolt secured the gold medal in the 100m race at the 2008 Olympics
Olympic star could break historic athletics record nobody thought possible with 3D printed 'flysuit'
She is aiming to break her own world record.
Usain Bolt lost out to his Jamaican rival Yohan Blake before the 2012 London Olympics