He is the head football coach for the University of Wisconsin–River Falls, a position he has held since 2011.
Walker served as the head football coach DePauw University from 2006 to 2008.
He was also the head baseball coach at DePauw from 2000 to 2009, tallying a mark of 253–166.
Walker played football DePauw and was the team's start quarterback.
Robby Long was appointed interim head football coach.