LB Poppinga joins Cowboys defense
NOV 26, 2012 2:13p ET
Poppinga joined the Cowboys on Monday as the roster replacement for linebacker Bruce Carter, who will miss the rest of the season with a dislocated left elbow. Carter is the fourth starting defender to be placed on injured reserve.
Poppinga says he tried to keep himself in "Batman" shape -- ready when called -- while sitting out this season. He last played in the 2011 finale with St. Louis.
Dallas is without its top two inside linebackers in Carter and Sean Lee, who injured a toe last month. Dan Connor will be the third defensive play caller at the start of a game Sunday, against Philadelphia.