Adrian Peterson spent several months in free agency before landing with Washington recently. Although the Redskins did not fare especially well in a loss to the Broncos on Friday night, their 33-year-old running back showed he still has something left. Peterson is now a “stone-cold lock” to make the Redskins’ roster, Rich Tandler of NBC Sports Washington writes. While the future Hall of Fame back was brought in because of injuries to Derrius Guice, Samaje Perine and Byron Marshall, Tandler views Peterson as having usurped Marshall for a spot on Washington’s 53-man roster. Peterson amassed 56 yards on 11 carries in his Redskins debut. Tandler expects Washington to retain four running backs but doesn’t rule out the prospect of five surviving the post-preseason cuts.

Here’s more out of the nation’s capital and the latest from some of the Redskins’ rivals.

• Thanks to Jonathan Allen‘s return and the arrival of his former Alabama teammate, Da’Ron Payne, Washington is deeper on the defensive line than it was last season. But Tandler expects one of the Redskins’ cogs up front to begin the season on the PUP list. Stacy McGee underwent groin surgery earlier this summer and was not expected to be ready for Week 1. A spot on the Reserve/PUP list will shelve McGee for six regular-season weeks.
• Former Redskins starter Matt Jones looks to have played himself out of consideration for an Eagles backup job, with Eliot Shorr-Parks of NJ.com handicapping the race for Philadelphia’s No. 4 running back job as a head-to-head battle between third-year player Wendell Smallwood and rookie UDFA Josh Adams. Shorr-Parks views Donnel Pumphrey, a 2017 fourth-rounder who missed all of last season, as third behind Smallwood — whom the Eagles are still intrigued by — and Adams in this race for work behind Jay Ajayi, Darren Sproles and Corey Clement. An Adams cut will likely result in another team claiming him, since the Eagles had to give him one of the largest UDFA guarantees any team authorized in this year’s post-draft signing period.
• The Cowboys‘ move of Kony Ealy to defensive tackle may not be enough to save his roster spot. Dallas is deeper up front this year, and although Ealy was a 2018 UFA signing, Clarence Hill of the Fort Worth Star-Telegram has the former Panthers second-round pick off the 53-man roster. Former Dallas waiver claim Brian Price resides in front of Ealy, in Hill’s view, for a roster spot. Ealy signed a one-year, $1.25MM contract, with a $200K signing bonus, in April. Also lost in the shuffle here is recent Cowboys trade acquisition Jihad Ward, who Hill doesn’t see making the roster. Both of these former second-round picks will at least need to show well in Dallas’ final two preseason games to have a shot.
• One of the Eagles‘ 2018 UDFAs, safety Stephen Roberts, did not last until the final cut. Philly waived the Auburn product earlier Saturday, and this came after the defending Super Bowl champions guaranteed $52K of his base salary, per ESPN.com’s Field Yates (Twitter link). That amount was one of the highest guarantees allotted to any UDFA this year, so it’s possible Roberts will generate some waiver-wire attention.