COLUMBIA, Mo. - An assistant head coach resigned from the University of Missouri football team on Monday.
David Yost resigned his position as assistant head coach and offensive coordinator after spending 12 years on the Mizzou staff under head coach Gary Pinkel.
Yost began his 17-year association with Pinkel at Toledo in 1996 as a graduate assistant. He followed Pinkel to Mizzou prior to the 2001 season.
Yost cited personal reasons for his decision, which is effective immediately.
"There are a lot of factors that played into the process of coming to my decision," Yost said in a statement released by the University of Missouri. "I feel like I've had a great run here and that it's just the right time to turn it over to someone else. On one hand, it's a really hard decision to make, but on the other hand, I feel good that it's the right decision at the right time for me."
Yost was the first staff member to join Pinkel at Mizzou and initially served as quarterbacks coach and recruiting coordinator before a 2009 promotion to offensive coordinator. In the fall of 2011, assistant head coach was added to his title.
Three of Yost's quarterbacks are currently playing in the NFL, including Brad Smith, Chase Daniel and Blaine Gabbert.
Pinkel said in a statement that he asked Yost to reconsider, but respected the decision.
"He has been such an instrumental part of our program and everything we've built since we came here. There's hardly an aspect of our program that he hasn't had a hand in, and we're going to miss his leadership and energy. He was responsible for a lot of things, and he did them all very well. He was an outstanding representative of Mizzou who busted his tail for our program," Pinkel said.
Pinkel noted Yost would be difficult to replace, but said there will be a national search for the position and internal candidates would be considered.
Mizzou ended the 2012 season with a loss against Texas A&M. It was the school's inaugural season in the Southeastern Conference. They ended with a 5-7 record (2-6 in the SEC).