Mark Sullivan enters his seventh season as the defensive coordinator since returning to the team in 2007. This is Coach Sullivan's second tour on the Lancer sideline having coached for Worcester State and Head Coach Brien Cullen from 2000-2001. Coach Sullivan was also promoted to Associate Head Coach in 2007 and he will tutor the defensive backs unit in 2012.

Before coming back to Worcester State, Sullivan had a six year stint as the head coach at Framingham State. Prior to coaching at WSC and FSC, Coach Sullivan began his collegiate career as the offensive coordinator for UMass-Lowell.

Coach Sullivan began his coaching career in 1983 serving as defensive coordinator for Marlboro High School and St. Bernard's. Following that he was a head coach for 10 years most notably at Keefe Tech in Framingham. 

In 1991 he was named Coach of the Year at Keefe Tech and in 1992 was chosen to coach in the Shriner's All-Star game.  In 1994, while at Ayer High School, Coach Sullivan was on the sidelines for the Central Mass All-Star game.

Coach Sullivan is a 1985 graduate of UMass-Amherst and is currently a history teacher at Wachusett Regional High School. He currently lives in Jefferson with his wife Sarah.