Lots of people claim that Greene was "faster" than his PR would indicate, and point to his run in Edmonton as evidence.
In Edmonton, he was well on his way to a sub-9.80 clocking, when he tore his ham.
ALL THIS PROVES is that his body could NOT handle the stress of performing any faster than 9.80
Greene had a great career, and had PLENTY of opportunities to prove himself. There is absolutely no way that Greene could have gone 9.75, ever, BECAUSE HE DIDN'T.
He TRIED, and he FAILED, MASSIVELY.
He was physically incapable of sprinting any faster than he actually did.