Cory Undlin


Cory Undlin is an American football coach who is currently the defensive coordinator for the Detroit Lions of the National Football League. He previously served as the defensive backs coach for the Philadelphia Eagles, Denver Broncos, Jacksonville Jaguars, and Cleveland Browns.

Playing career

Undlin attended California Lutheran University, where he played football as a safety from 1990 to 1994. He had the distinction of being named second-team All-Southern California Intercollegiate Athletic Conference honors in 1993. At Cal Lutheran, he was a teammate and roommate of Ben McEnroe.

Coaching career

College

Undlin began his coaching career at his alma mater California Lutheran as a linebackers coach from 1998 to 1999. He was promoted to defensive coordinator in 2000, a position he held through 2001, when he moved to Fresno State University. He spent two seasons in 2002 and 2003 as a graduate assistant at Fresno State under head coach Pat Hill, a former assistant coach with the Cleveland Browns under Bill Belichick.

New England Patriots

In 2004, Undlin joined Belichick as a defensive coaching assistant with the New England Patriots. He was part of the Patriots staff when they won Super Bowl XXXIX.

Cleveland Browns

In 2005, Undlin was hired by the Cleveland Browns as a defensive assistant under head coach Romeo Crennel. In 2007, Undlin was promoted to secondary coach and assistant special teams coach. In 2008, Undlin was promoted to defensive backs coach.

Jacksonville Jaguars

In 2009, Undlin moved to the Jacksonville Jaguars as a defensive assistant following Crennel's firing in Cleveland. He was promoted to defensive backs coach in 2010, but was fired along with the rest of the staff after the 2011 season.

Denver Broncos

In 2012, he was hired as a defensive quality control coach for the Denver Broncos, and he was promoted to defensive backs coach in 2013.

Philadelphia Eagles

In January 2015, Undlin was hired by the Philadelphia Eagles as their defensive backs coach. He was retained as the defensive backs coach for the Eagles on January 20, 2016. On February 4, 2018, Undlin was part of the Philadelphia Eagles coaching staff that defeated the New England Patriots, 41-33, in Super Bowl LII.

Detroit Lions

On January 13, 2020, the Detroit Lions hired Undlin as their defensive coordinator.

Personal life

Undlin and his wife, Amy, have three children together. A boy, Caden, and two girls, Brooke and Taylor.