Robert Vann "Bobby" Williams (born November 21, 1958) is an assistant coach for the University of Alabama Crimson Tide football team. Between 2000 and 2002, he was the head coach of the Michigan State Spartans football team.During his time at Purdue University, between 1978 and 1982, Williams was a four-year letterman for the Boilermakers football team and a captain in his senior season. He started for three years in the secondary, after spending his freshman season at running back. He graduated in 1982 with a degree in general management. Wikipedia