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Cincinnati Bengals Team |

This is a 2021 photo of Mark Duffner of the Cincinnati Bengals NFL football team. This image reflects the Cincinnati Bengals active roster as of Tuesday, June 15, 2021 when this image was taken. (AP Photo)

Mark Duffner

Senior Defensive Assistant

College: William & Mary

Hometown: Annandale, Va.


A Bengals assistant from 1997-2002, Mark Duffner returned to Cincinnati's coaching staff in '19 as senior defensive assistant. He now is in his 28th season as an NFL coach, and 12th overall with the Bengals.