mediocrity

I'm the head coach of a football team in a BCS conference. The coach that preceded me had seven straight winning seasons, won 9 games in his final year, and took his team to three bowl games. He was the winningest coach in my school's history as of when I was hired.

Unfortunately, the coaching record for my first six years was not so stellar:
2-9
3-8
6-4-1
6-5
5-6
2-8-1

At the end of my sixth year, many fans at my school had concluded that I wasn't going to get the job done, and demanded that the Athletic Director make a change. For whatever reason, he kept me on, and now I'm considered by virtually all college football observers to be one of the top coaches in the game.

Who am I?