A friend of mine who used to be a recruiting analyst once told me about a conversation he had with Robert Gillespie while he was RB coach at UT. Gillespie told him that one of the biggest things he looks for is what a RB does when there is very little space between him and a would-be tackler. So often, it's hard to tell with high school guys because the good ones can simply outrun (or run right by) defenders on that level. But if a defender gets himself in position to make the tackle and the RB can make him miss in a very small space, that got Gillespie's attention. Said that's what got their attention with John Kelly, when he was just rated a 3* RB.