Redskins running back Clinton Portis, who initially was expected to miss four to six weeks with an injured groin, is at least two weeks away from seriously testing it, *The Washington Post* reported Wednesday.
"It's still going to be, for sure, a couple of weeks. It takes some time," Shanahan said, according to The Post. "With a third-degree separation, you don't want to push it too hard. We just kind of have to wait and see. To me, it'll be a minimum of two weeks before he's able to even push it."
In Portis' absence, Ryan Torain has run for 335 yards on 75 carries in four games, including back-to-back 100-yard performances against the Indianapolis Colts and Chicago Bears.
Shanahan also announced Wednesday that the team had signed running back James Davis to the practice squad, the team's official website reported. The Redskins had just two running backs -- Torian and Keiland Williams -- available against the Bears because Chad Simpson injured his hamstring during practice leading up to the game.
In six games as a reserve with the Cleveland Browns, Davis had 13 carries for 24 yards and four receptions for 9 yards. He was cut by the Browns on Monday.
Simpson was one of nine players -- including quarterback Donovan McNabb -- who didn't practice Wednesday, the *Post* reported. Sitting out were McNabb (hamstring), Simpson (hamstring), offensive tackle Jammal Brown (hip), cornerback DeAngelo Hall (back), offensive tackle Stephon Heyer (ankle), safety LaRon Landry (Achilles), safety Kareem Moore (knee), linebacker Brian Orakpo (ankle) and fullback Mike Sellers (foot).
