TAMPA, Fla. (AP) Mike Smith is out as defensive coordinator of the Tampa Bay Buccaneers, replaced by linebackers coach Mark Duffner.

Riding a three-game losing streak and not showing any signs of being able to fix a porous unit that keeps undermining the team's chances of winning, the Bucs dismissed the former Atlanta Falcons coach Monday after yielding 92 points in the first half of consecutive losses to Pittsburgh, Chicago and Atlanta.

Tampa Bay, which has the NFL's second-ranked offense and No. 1 passing attack, rallied to make two of those games close, however pressure on coach Dirk Koetter to make a change had been mounting since Mitchell Trubisky threw a career-best six touchdown passes in the Bears' 48-10 rout of the Bucs on Sept. 30.