The Dallas Cowboys fired defensive coordinator Rob Ryan on Tuesday, reports ESPN.com.
Ryan, 50, spent two seasons with the Cowboys after various stops in the league including Cleveland, Oakland and New England.
Ryan, the brother of New York Jets head coach Rex Ryan and son of former NFL coach Buddy Ryan, started as an NFL assistant in 1994 breaking in the with Arizona Cardinals. The Cowboys missed the playoffs both seasons Ryan was in Dallas. The Cowboys ranked 14th in yards allowed in 2011 and 2012, while this year's team ranked 23rd in points allowed, including 31 points a game in the team's final two games.