Offseason key for Richardson?

Trent Richardson is supposed to be a star franchise running back, since, in essence, he is worth two first-round picks. That's because the Cleveland Browns drafted him third overall in 2012 and the Indianapolis Colts gave up their 2014 first-rounder to acquire him in September. Thus far, though, he's been a complete bust for the Colts, as he mustered just 458 yards on 157 carries (2.9 YPC) last season.