Romeo Crennel coached in the NFL from 1981 to 2020, spanning 38 seasons with 6 organizations. He served as head coach of the Kansas City Chiefs and Cleveland Browns. His roles included Associate Head Coach, Assistant Head Coach, Defensive Coordinator, and Defensive Assistant. He worked under Bill Belichick, Bill O'Brien, and Bill Parcells. 3 of his former assistants went on to become NFL head coaches.

Coaching Tree

Head Coach Offense Defense Special Teams General

Career Timeline

Career History

Year	Team	Role(s)
2020	Houston Texans	Associate Head Coach under Bill O'Brien
2019	Houston Texans	Assistant Head Coach, Defensive Coordinator under Bill O'Brien
2018	Houston Texans	Assistant Head Coach, Defensive Coordinator under Bill O'Brien
2017	Houston Texans	Assistant Head Coach, Defensive Assistant under Bill O'Brien
2016	Houston Texans	Defensive Coordinator under Bill O'Brien
2015	Houston Texans	Defensive Coordinator under Bill O'Brien
2014	Houston Texans	Defensive Coordinator under Bill O'Brien
2012	Kansas City Chiefs	Head Coach HC
2011	Kansas City Chiefs	Defensive Coordinator, Head Coach
2010	Kansas City Chiefs	Defensive Coordinator under Todd Haley
2008	Cleveland Browns	Head Coach HC
2007	Cleveland Browns	Head Coach HC
2006	Cleveland Browns	Head Coach HC
2005	Cleveland Browns	Head Coach HC
2004	New England Patriots	Defensive Coordinator under Bill Belichick
2003	New England Patriots	Defensive Coordinator, Defensive Line under Bill Belichick
2002	New England Patriots	Defensive Coordinator, Defensive Line under Bill Belichick
2001	New England Patriots	Defensive Coordinator under Bill Belichick
2000	Cleveland Browns	Defensive Coordinator, Defensive Line under Chris Palmer
1999	New York Jets	Defensive Line under Bill Parcells
1998	New York Jets	Defensive Line under Bill Parcells
1997	New York Jets	Defensive Line under Bill Parcells
1996	New England Patriots	Defensive Line under Bill Parcells
1995	New England Patriots	Defensive Line under Bill Parcells
1994	New England Patriots	Defensive Line under Bill Parcells
1993	New England Patriots	Defensive Line under Bill Parcells
1992	New York Giants	Defensive Line under Ray Handley
1991	New York Giants	Defensive Line under Ray Handley
1990	New York Giants	Defensive Line under Bill Parcells
1989	New York Giants	Special Teams Assistant under Bill Parcells
1988	New York Giants	Special Teams Assistant under Bill Parcells
1987	New York Giants	Special Teams Assistant under Bill Parcells
1986	New York Giants	Special Teams Assistant under Bill Parcells
1985	New York Giants	Special Teams Assistant under Bill Parcells
1984	New York Giants	Special Teams Assistant under Bill Parcells
1983	New York Giants	Special Teams Assistant under Bill Parcells
1982	New York Giants	Special Assistant under Ray Perkins
1981	New York Giants	Special Assistant under Ray Perkins

Worked Under (9)

Coach	Team	Years
Bill Belichick	New England Patriots	4
Bill O'Brien	Houston Texans	7
Bill Parcells	New York Giants	8
Bill Parcells	New England Patriots	4
Bill Parcells	New York Jets	3
Chris Palmer	Cleveland Bulldogs	1
Ray Handley	New York Giants	2
Ray Perkins	New York Giants	2
Todd Haley	Kansas City Chiefs	1

Protégés (3)

Coach	First HC Job	Year
Rob Chudzinski	Cleveland Bulldogs	2013
Nick Sirianni	Philadelphia Eagles	2021
Brian Daboll	New York Giants	2022