Vanderbilt running back Zac Stacy is another underrated player. He reminds me a little bit of Doug Martin about this time a year ago. Very similar in a lot of ways.
Anybody that's familiar with the way I evaluate RB's knows that squatty backs with a low center of gravity who run tough between the tackles, play physical, get yards after contact, understand how to block in pass protection, and protect the football are going to endear themselves to me as a prospect.
Contrary to popular theory, backs like this are not plentiful. Although you could always find 'em in different sizes.
Zac Stacy is a rolling ball of butcher knives who has all the ingredients that a RB needs to find their way high up on my draft board early in the process.