I was talking to a Vandy fan about it yesterday, he thought Mason was their worse coach but I pointed out Woody ball and the distant past. At least he made 2 bowl games at Vandy although he never had a winning season.
That being said, Vandy had a slow fall under him. Kind of reminds me of Holly Warwick with the Lady Vols. She wasn't terrible if you look at her overall record but there was a clear year after year dip going on with her coaching. You had same situation with Derrick Mason at Vandy, they were getting worse every year.