Playing career
The 6 ft 3 in (1.91 m) Lynn played at Celina High School and later at Texas Tech (1988–91), where he was an All-Southwest Conference running back in 1990. His senior year was cut short by a knee injury, and concerns about the injury left him undrafted. He was a journeyman reserve running back and special teams player during his NFL career, playing for the Denver Broncos (1993, 1997–99) and San Francisco 49ers (1995–96). He retired in 2000 due to repeated neck stinger injuries. Lynn was part of Denver's back-to-back Super Bowl champion teams (1997–98). In 1997 he had his best personal year as an NFL player.
Coaching career
Upon retiring in 2000, he joined the Denver coaching staff as an offensive assistant and special teams coach (2000–02), before joining the Jacksonville Jaguars as the running backs coach (2003–04). He left Jacksonville after being switched to special teams coach following a coaching staff shakeup by head coach Jack Del Rio in 2005 and quickly joined the Dallas Cowboys staff as the running backs coach. On January 26, 2007, with the retirement of Bill Parcells as Dallas head coach, Lynn signed on with the Cleveland Browns to fill their RB coach vacancy.
Lynn was named the Assistant Head Coach/Running Backs coach for the New York Jets on February 1, 2012 under head coach Rex Ryan, and was subsequently interviewed for the Head Coach job in January, 2015 after Ryan left. When he did not get the position, he followed Rex Ryan to the Buffalo Bills where he has taken the same position.
