Northwestern is one of two Big Ten teams kicking off spring practice Saturday, and the team has issued its official injury report for the upcoming sessions.
Four players are out for spring ball.
Proby started at middle linebacker in 2011 and recorded 60 tackles. Trumpy tore his ACL in the Big Ten opener at Illinois but will compete for the starting running back job in fall camp. Carpenter started seven games in the 2010 season before being used in a limited role last fall, but he should compete to fill Brian Peters' spot at safety. Watkins moved to tight end in bowl practices after falling down the depth chart at quarterback.
Northwestern concludes spring practice April 14 with its spring exhibition.