He's only been sprinting for a couple years. And has a very slim build compared to his peers. If he packs on 5-10lbs of muscle, he should be able to knock his 100 time down below 9.8 and his 200 time down below 19.5
I was reading an interview of his coach and trainer... and they were saying he has good top-end speed, and his start isn't awful, but his acceleration to top-end speed is really really poor. He lacks explosive power to accelerate quickly because he's a little too slim right now.