Michael Anthony Pettine, Jr. (born September 25, 1966) is an American football coach who is currently the defensive coordinator for the National Football League's Buffalo Bills. He was formerly the defensive coordinator for the New York Jets and the outside linebackers coach for the Baltimore Ravens. Pettine is the son of famous Pennsylvania high school football coach Mike Pettine Sr. who went 326-42-4 record in 33 seasons and won the AAAA state championship four times at Central Bucks High School West.