Purdue fires offensive coordinator Graham Harrell

(Photo credit: Alex Martin/Journal and Courier / USA TODAY NETWORK)Purdue head coach Ryan Walters needed just three games to know he needed to make a change.

On Sunday, he made that change, firing offensive coordinator and quarterbacks coach Graham Harrell.

"Decisions like this are never easy," Walters said in a statement. "After evaluating our start to the season, I felt that it was best for our team to make a change