The Buffalo Bills made a couple of roster moves on Monday, placing veteran defensive lineman Alex Carrington on season-ending Injured Reserve and releasing undrafted rookie linebacker A.J. Tarpley.
Carrington reportedly tore his right quadriceps tendon during Sunday's loss to the Kansas City Chiefs, bringing to an end his brief stint as a starter for the Bills' injury-depleted defensive line. The same thing happened to him in 2013, when the then-starter for Mike Pettine tore his left quadriceps tendon during the third game of the season. Carrington signed a one-year deal with the Bills this past offseason, meaning that he'll be a free agent once again this coming spring.
Tarpley made the Bills' 53-man roster as an undrafted player out of Stanford, and had been active for every game this season as a reserve and special teams player. He ultimately proved to be a liability in both of those roles, however - he had some significant mental errors in his 26 snaps in Kansas City, by far his most extended action of the year - and the Bills need an upgrade with Nigel Bradham facing the possibility of missing multiple weeks. Tony Steward, himself a rookie, will start for Bradham this Sunday.
Buffalo will be adding two players to their 53-man roster this week, and it's a fairly safe bet that one will play defensive line, and the other linebacker.