Love Andre Williams. Not sure about him being a sleeper. A name thrown around a lot has been the RB from Cuse. Jerome Smith.. Powerful runner could be had in the middle rounds for sure.
I also like Isaiah Crowell from Alabama State. Was with Georgia but got in trouble and kicked off the team. 5'11, 215 Pounds. Projected to go in rounds 5-7.
Some decent tape of him on youtube. Worth a look.
Stop Booing Tiki Barber.
Jerome Smith Syracuse
Terrence West RB from Towson is another one
Andre Williams and Carlos Hyde are not Sleepers. Albeit, there not Trent Richardson types, that are guranteed 1st rd, but there well known in this paticular class..
Some sleeper RB's would be
Kapri Bibbs Col St.
David Fluellen Toledo
Marion Grice Arz St.
Just to name a few.
James White has always been a guy i liked. I bet if he was 6ft 220lb, he'd be in line for top back this yr. Hes just a bit small, but i bet who ever drafts him, finds out its not much of a biggie. Hes ran in the Big10, a very physically demanding confrence for RB's, and hes exceled while doing so, in many smash mouth games throughout his career. He could be a really nice back in a duo system..