The Chiefs placed defensive back Sanders Commings on injured reserve Saturday and promoted outside linebacker Josh Martin from the practice squad to the 53-man roster.
Commings, a fifth-round pick from Georgia, had just started to play regularly after a broken collarbone shelved him for the first two months of his rookie season. He made his NFL debut in the Chiefs’ 27-17 loss to Denver on Nov. 17, finishing with a tackle, and logged 23 special-teams snaps in the Chiefs’ 41-38 loss to San Diego last Sunday.
But Chiefs coach Andy Reid said Wednesday that Commings recently developed some inflammation in the same shoulder that he hurt, and Commings ― who was ruled out for Sunday’s rematch with the Broncos ― did not practice all week.
Commings move to injured reserve could open the door for more playing to veteran defensive back Dunta Robinson, who has been inactive for the last two games. Robinson’s playing time has been sporadic since he was burned by Giants receiver Victor Cruz for a long touchdown in the Chiefs’ 31-7 win in week four.
Martin, a 6-foot-3, 245-pound undrafted rookie from Columbia University, has yet to appear in a game. He had 140 tackles and 17 1/2 sacks in 30 games at Columbia.