Cory Undlin
Houston Texans
Position:Defensive passing game coordinator
Personal information
Born: (1971-06-29) June 29, 1971 (age 52)
St. Cloud, Minnesota, U.S.
Career information
College:Cal Lutheran
Career history
As a coach:
Career highlights and awards
Coaching stats at PFR

Cory Undlin (born June 29, 1971) is an American football coach who is the defensive passing game coordinator for the Houston Texans of the National Football League (NFL). He previously served as the defensive coordinator for the Detroit Lions in 2020 and also served as an assistant coach for the Philadelphia Eagles, Denver Broncos, Jacksonville Jaguars, Cleveland Browns, New England Patriots and San Francisco 49ers

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.[1] At Cal Lutheran, he was a teammate and roommate of Ben McEnroe.[2]

Coaching career


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.[3] He was retained as the defensive backs coach for the Eagles on January 20, 2016.[4] 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.[5]

Detroit Lions

On January 13, 2020, Undlin was hired by the Detroit Lions as their defensive coordinator under head coach Matt Patricia.[6] He missed the team's week 16 game against the Tampa Bay Buccaneers due to COVID-19 protocols.[7] He was fired following the season.

San Francisco 49ers

On February 11, 2021, Undlin was hired by the San Francisco 49ers as their pass game specialist and secondary coach under head coach Kyle Shanahan.[8]

Houston Texans

On February 14, 2023, Undlin was hired by the Houston Texans as their defensive passing game coordinator under head coach DeMeco Ryans.[9]


  1. ^ "Cory Undlin '94, MA '03". Archived from the original on September 28, 2011. Retrieved July 22, 2011.
  2. ^ "CLU coaching tree branches out in every direction".
  3. ^ Berman, Zach (January 24, 2015). "New Eagles assistant draws high praise". Retrieved January 26, 2015.
  4. ^ Berman, Zach (January 21, 2016). "Eagles retain seven coaches, add seven new ones". The Philadelphia Inquirer. Retrieved January 20, 2016.
  5. ^ Jones, Lindsay H. (February 4, 2018). "Eagles dethrone Tom Brady, Patriots for first Super Bowl title in stunner". USA TODAY. Retrieved February 25, 2019.
  6. ^ "Lions hire Cory Undlin as defensive coordinator". Detroit Lions. January 13, 2020. Retrieved January 13, 2020.
  7. ^ Lage, Larry (December 25, 2020). "Lions' Darrell Bevell can't coach Saturday due to COVID-19 protocols; 3 defensive coaches also out". Retrieved March 8, 2021.
  8. ^ "49ers To Add Cory Undlin To Staff". Pro Football Rumors. January 30, 2021. Retrieved October 16, 2021.
  9. ^ "Houston Texans Announce 2023 Coaching Staff". February 24, 2023. Retrieved February 24, 2023.