In 2012, quarterback Matt McGloin became the all-time leader in career passing touchdowns, with 45, at Penn State University(1). McGloin started his college career as a walk-on(2).
In collegiate history, noteably at a Division I FBS level, has there been a walk-on QB or player that became the all-time leader in a major statistical category (TDs, yards, sacks, interceptions, etc.) at his university?
NOTE: Clay Matthews, now a linebacker with the Green Bay Packers, was a walk-on at the University of Southern California.