Mark Duffner

Mark Duffner

Cincinnati Bengals
Position:	Senior defensive assistant
Personal information
Born:	(1953-07-19) July 19, 1953 Annandale, Virginia
Career information
College:	William & Mary
Career history
As a coach:
Ohio State (1975–1976) Graduate assistant Cincinnati (1977–1980) Defensive coordinator Holy Cross (1981–1985) Defensive coordinator Holy Cross (1986–1991) Head coach Maryland (1992–1996) Head coach Cincinnati Bengals (1997–2000) Linebackers coach Cincinnati Bengals (2001–2002) Defensive coordinator/Linebackers Green Bay Packers (2003–2005) Linebackers coach Jacksonville Jaguars (2006–2013) Linebackers coach Miami Dolphins (2014–2015) Linebackers coach Tampa Bay Buccaneers (2016–2017) Linebackers coach Tampa Bay Buccaneers (2018) Defensive coordinator/Linebackers Cincinnati Bengals (2019–present) Senior defensive assistant
Head coaching record
Career:	NCAA: 80–40–1 (.665)
Coaching stats at PFR

Mark Duffner (born July 19, 1953) is an American football coach who is currently a senior defensive assistant for the Cincinnati Bengals of the National Football League (NFL). Duffner served as the head coach of the Maryland Terrapins football team from 1992 to 1996.

Prior to Maryland, Duffner served as the head coach at the College of the Holy Cross where he compiled a 60–5–1 record. At Maryland, Duffner compiled a 20–35 record. His most important legacy at Maryland has been in the record books; most of the Terps' longstanding single game, season, and career passing and receiving record were broken during his tenure. This was due to the implementation of his run and shoot offense and quarterbacks John Kaleo, Scott Milanovich, and Brian Cummings. However, his teams were notoriously weak on defense, frequently giving up points so fast that even his prolific offense couldn't keep up. Duffner's only winning season came in 1995 when the Terps finished with a 6–5 record and started with four consecutive wins.

After leaving Maryland, Duffner became an assistant with the Cincinnati Bengals from 1997 to 2002, where he served as linebackers coach and then defensive coordinator. From 2003 to 2005, he served with the Green Bay Packers. In early 2006, he was signed by the Jacksonville Jaguars as the linebackers coach. He was hired by the Miami Dolphins in January to be their LB Coach for the 2014 season. On October 15, 2018 Duffner was named as the new defensive coordinator of the Tampa Bay Buccaneers.

Duffner was hired by the Bengals as a senior defensive assistant on March 7, 2019. He missed the team's week 10 game in 2020 against the Pittsburgh Steelers due to COVID-19 pandemic protocols.

Head coaching record

Year	Team	Overall	Conference	Standing	Bowl/playoffs	NCAA#
Holy Cross Crusaders (Patriot League) (1986–1991)
1986	Holy Cross	10–1	4–0	1st		5
1987	Holy Cross	11–0	4–0	1st		1
1988	Holy Cross	9–2	3–1	2nd		19
1989	Holy Cross	10–1	4–0	1st		T–4
1990	Holy Cross	9–1–1	5–0	1st		8
1991	Holy Cross	11–0	5–0	1st		3
Holy Cross:		60–5–1	25–1
Maryland Terrapins (Atlantic Coast Conference) (1992–1996)
1992	Maryland	3–8	2–6	8th
1993	Maryland	2–9	2–6	T–7th
1994	Maryland	4–7	2–6	7th
1995	Maryland	6–5	4–4	T–5th
1996	Maryland	5–6	3–5	T–6th
Maryland:		20–35	13–27
Total:		80–40–1
National championship         Conference title         Conference division title or championship game berth

External links

• Cincinnati Bengals profile