No. 21 — Jonathan Williams
School: Arkansas
Year: Senior
Position: Running back
Ht.: 6-foot
Wt.: 224
Why he's No. 21: Despite sharing the rock with fellow standout tailback Alex Collins, Williams rushed for 1,190 yards and 12 touchdowns last season and was a second-team All-SEC selection.
Williams is a big, physical runner who makes a lot of his yardage between the tackles. But he also has the speed to get outside and go the distance. He had a 90-yard run last season and is a home-run threat.