Sam Darnold seemed destined for stardom and then his career fell apart. The long rebuild has brought him to Super Bowl LX

By Kyle Feldscher, CNN San Francisco (CNN) — Sam Darnold seemed destined to be a star. With the home state kid under center, the University of Southern California surged back into the prominent national profile to which Trojan fans were accustomed. He won one of the most thrilling Rose Bowls of the 2010s and then