Dennis J. Allen (born September 22, 1972) is an American football coach, who currently is currently a defensive assistant of the New Orleans Saints. He previously served as the Oakland Raiders head coach but was fired after an 0-4 start to the 2014 NFL season.Allen also previously coached for the Denver Broncos, New Orleans Saints, Atlanta Falcons, University of Tulsa and his alma mater, Texas A&M University. His father Grady Allen was also a standout linebacker for the Aggies and later in the NFL for the Falcons. Dennis and his wife, Alisson, have a son, Garrison, and a daughter, Layla.In 2009 in New Orleans, the Saints ranked 3rd in interceptions despite giving up 321 yards per game. Allen's Broncos were in the bottom half of yards allowed, ranked 23rd, but were 5th in the league in sacks.On September 29, 2014, Allen was fired as the Raiders head coach. Retracted reports from a day earlier led to media speculation, but the decision was not final until the day after.