College football has changed plenty over the past few years as it trends in the direction of big business. But that hasn’t completely erased the heartwarming stories that have been consistent in this sport and play a role in why we follow the teams we do. The USC Trojans were home to one of those this offseason as walk-on wide receiver Josiah Zamora became former walk-on wide receiver Josiah Zamora. Zamora got the news from head coach Lincoln Riley following a summer workout. The fourth-year receiver had unsurprisingly won a winter workout competition and Riley asked him to break the team down…