UPDATED 12:15 p.m.
The Redskins added the 35-year-old ahead of the final preseason game, but released Jenkins when they trimmed the roster from 75 to 53.
The team officially announced the move on Wednesday.
Washington released center Austin Reiter, Breaking Burgundy has learned.
Veterans on the roster for Week 1 receive a guaranteed contract for the season, which is why teams often wait until Week 2 to add certain players.
Jenkins is known for his run defense and the Redskins showed they needed more of that in their Week 1 loss to Pittsburgh. The Steelers rushed for 147 yards, averaging 5.1 yards per carry.
Adding Jenkins means the Redskins would have seven players on the DL. Rookie Anthony Lanier was inactive for the 38-16 setback. Kedric Golston, 33, has survived for many seasons despite rarely elevating to the starting lineup. He received 28 snaps in the loss, ahead of Ricky Jean Francois (22) and Kendall Reyes (18).
Reiter, a seventh round pick last season, is practice squad eligible. That's where he spent most of season with Washington, though drawing some interest from another NFC team. That organization may look to make a move with Reiter this time, according to a source. Otherwise the Redskins hope to bring Reiter back on their practice squad if he clears waivers.
The Redskins are not holding practice Tuesday, but coach Jay Gruden is scheduled to speak with the media this afternoon.
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