S ince the 2001 season, only four Super Bowls have been won by starting quarterbacks who will either not enter the Hall of Fame or are not certainties for enshrinement. The stat h

A competitor above all else, the quarterback has used past failures as motivation. “You either win or you learn,” he says.

Barkley is the singular difference-maker the Eagles did not have two years ago when they lost to Kansas City in the Super Bowl.