Maybe it's because of the uniform he wears or the fact that he checks in at an imposing 6-foot-2, 230 pounds that people seem to have a preconceived notion of the kind of running back Najee Harris is.
The senior from Antioch, California, is well aware of this. He ran for 1,224 yards and caught 27 passes for Alabama last year, and yet he heard the doubts.
He couldn't catch.
He couldn't block.
He wasn't elusive enough or explosive enough or enough of a third-down threat.