Baltimore Ravens[edit]
Pettine joined the Ravens in 2001 and was promoted to OLB's coach in 2005 when Rex Ryan became defensive coordinator.

New York Jets[edit]
Pettine, as Rex Ryan's "right-hand man", reportedly received a three-year deal to lead the Jets defense. Pettine has been credited with contributing strongly to the Jets number one defense in the NFL in 2009. His tenure with the Jets ended after the 2012 season, with the expiration of his contract.[3]

Buffalo Bills[edit]
Pettine was hired to be the defensive coordinator of the Buffalo Bills on January 9, 2013.[4]

Cleveland Browns[edit]
Pettine was hired to be the head coach of the Cleveland Browns on January 23, 2014.[5] On January 3, 2016, the same day the Browns lost their last game of the season to finish 3–13, Pettine was fired, along with GM Ray Farmer. Pettine started 7-4 in the 2014 season, but the Browns lost their final 5 games to finish at 7-9. The Browns were 3-13 the following season. Pettine went 10–22 in his two seasons as Cleveland's head coach, losing 18 of his final 21 games.

Green Bay Packers

Pettine was hired to be the Defensive Coordinator for the Green Bay Packers on January 9th, 2018
.