Strong safety LaRon Landry was limited in Friday's practice as he continues to recover from a hamstring injury.
Landry has not played in the Redskins' first two regular season games but has said he hopes to make his 2011 debut against the Dallas Cowboys on Monday night.
Head coach Mike Shanahan said Landry would be a "game time decision."
"He couldn't go full speed yet," Shanahan said.
Shanahan wants to be cautious with Landry's injury so that there's no setback.
"I don't want him to play and, all of the sudden, he pulls his hamstring in the second or third play of the game and we lose him for six weeks," Shanahan said. "So he's going to have to show me something [in practice] to play."
If Landry cannot play Reed Doughty will likely start for the third straight game.
Meantime, cornerback Josh Wilson's injury status was also a question heading into Monday's game. Wilson injured his back in the Arizona Cardinals game last Sunday.
"[Wilson] was limited too, but he did practice and did get some reps in there," Shanahan said. "A lot of these guys we put down as limited are going to be a game day decision."
Cornerback Kevin Barnes would likely be called upon to start if Wilson cannot play on Monday night.
Since this week's game is Monday night, the Redskins do not have to release a final injury report until after the team's final practice of the week, which is Saturday.