Donnel Pumphrey

If not for a frightening lack of size at just 5-9, 170, Pumphrey would be a top-3 RB. Simply remarkable the last two years, Pumphrey posted 1,049 yards and 10 touchdowns from scrimmage as a 155-pound freshman in 2013 before going off for 1,873 yards (6.8 YPC) and 20 touchdowns on the ground alone last year. Pumphrey's size will scare off some fantasy owners, but he should keep rolling this season. All but one of his starting linemen return, and he is too good to be contained by Mountain West defenses.

Pumphrey is perilously small at a listed 5-9, 170 (155 in 2013), but the speedy RB was highly effective as a true freshman last year, showing elite upside as a running-receiving threat for the Aztecs. He rushed for 752 yards (6.0 YPC) and eight touchdowns while adding 22 catches for 234 yards (10.6 YPC) and two more scores. He did it all despite the presence of starting RB Adam Muema, who ate up 256 carries and 18 catches. Muema is no longer on the team, paving the way for Pumphrey. While Pumphrey probably isn't big enough for a feature-back workload, the rare upside he's shown gives reason to believe he'll post big numbers this year as long as he's healthy.