One day after the Rams admitted that DT Adam Carriker had a “significant shoulder injury,” they placed him on season-ending injured reserve. St. Louis also trimmed its roster en route to reaching the 53-man limit.

Adam Carriker made his preseason debut for the Rams on Thursday, but it will be his last game action of the season. The Rams will put Carriker on season-ending injured reserve with a right shoulder ailment that will require surgery, a league source told NFL Network’s Jason La Canfora.

The St. Louis Rams exited Sunday’s 34-14 win over the Cowboys with injuries to RB Steven Jackson and DT Adam Carriker. Rams coach Jim Haslett said during his postgame news conference it’s too early to tell the severity of either injury.