The Cleveland Browns' defense faces significant challenges after a difficult loss to the Dallas Cowboys, resulting in four players being placed on injured reserve.

Among the injured are safety Juan Thornhill, tackle Maurice Hurst II, and linebackers Mohamoud Diabate and Tony Fields II, all expected to miss at least four games.

In addition, Pro Bowl tight end David Njoku is likely out for several weeks due to an ankle sprain, prompting the team to sign veteran Geoff Swain.