Bryan Harsin is officially keeping Carnell “Cadillac” Williams on The Plains.

Harsin announced Friday that the former All-American is being retained as running backs coach.

“I’m fired up to have Cadillac on our staff,” Harsin said via a school release. “After several conversations, it was easy to see how much passion he has and his desire to learn, grow and develop in the coaching profession. Just spending time with him you see why he is the ultimate ambassador for Auburn football, and that goes beyond just being an elite player but an elite person.”

Williams joined Gus Malzahn’s coaching staff in January 2019. During his first season on the Auburn coaching staff, the Tigers posted five 100-yard rushing games and D.J. Williams earned SEC Freshman of the Week honors for his performance against LSU. In two seasons, Williams’ backs have tallied nine 100-yard games and three SEC weekly honors.

Under Williams’ tutelage in 2020, freshman running back Tank Bigsby was named the SEC Co-Freshman of the Year and Associated Press SEC Newcomer of the Year after leading all freshmen in the conference with 834 rushing yards. Bigsby was the first Auburn freshman in school history to rush for three consecutive 100-yard games and his 834 yards were the second-most all-time at Auburn by a rookie.

“Auburn is a special place to me and I’m appreciative for this opportunity to be a part of Coach Harsin’s staff and coach at the school that made me the person I am today,” Williams said in the school announcement. “I’ve enjoyed getting to talk football with Coach Harsin and can’t wait to be part of something special.”