I was watching the Tennessee replay on the SEC channel and they mentioned Hurd was 6' 4", which I thought was pretty tall for most running backs today. When I got to your roster (LINKED) I only saw three running backs on the whole team. That's cutting it short if true. When I think tall RB's, which are not the norm today, I think knee injuries. BTW, Hurd looked very good. Here's the roster...............
https://tennessee.rivals.com/croster.asp
https://tennessee.rivals.com/croster.asp