(AP Photo/Brynn Anderson)FRISCO, Texas – The Dallas Cowboys agreed to terms Monday with former Atlanta coach Dan Quinn as defensive coordinator, turning over a unit that was among the worst in franchise history to someone who built his reputation on defense in Seattle. The Cowboys switched to the 4-3 in 2013 when Rod Marinelli joined the staff and eventually became defensive coordinator. Quinn was hired in Atlanta in 2015 after two seasons as Seattle’s defensive coordinator. He was Florida’s defensive coordinator for two seasons before joining the Seahawks. Quinn was the defensive line coach in Seattle for two years before going to Florida.

The Las Vegas Raiders fired defensive coordinator Paul Guenther after he failed to make any significant improvement for the unit in nearly three full seasons on the job. Defensive line coach Rod Marinelli will take over on an interim basis for the rest of the season. Marinelli has previously served as a head coach in Detroit and defensive coordinator in Chicago and Dallas. He has long ties to Gruden, having served as his defensive line coach for the Super Bowl champion Tampa Bay Buccaneers in 2002 and then rejoining Gruden this season on the Raiders. We got a chance to win all three and see what happens at the end,” defensive tackle Johnathan Hankins said before the announcement.