The 2015 NFL Draft could be to running backs what 2014 was to wide receivers. You won’t necessarily need to be the best back in this loaded class to make an immediate impact. Jay Ajayi may be the Mike Evans to Todd Gurley’s Odell Beckham, or he might be the Sammy Watkins to Melvin Gordon’s . . . well, Gordon is (not) going to be Barry Sanders, so there’s no accurate way to make the analogy work there.