[4] Keller began his coaching career at Wartburg College in 1999 following graduation at UNI.
He would stay at Wartburg until he took the head coaching position at North Central College in Naperville, Illinois in 2005.
During his time as co-head coach Wartburg would go on to win 3 straight NCAA national titles.
Wartburg would again go on to make history that season by winning their 4th straight NCAA title.
[8] Keller has won 8 NCAA Division III Wrestling Championships as head coach, the most recent coming in 2022 in what would be his slimest margin of victory.