The Wizards guard bruised his right knee in Thursday's loss to the Milwaukee Bucks.
Wall injured his right knee in the first quarter of Thursday night's game.
The Wizards would complete a four-game season series sweep of the Bucks with a win.
Washington's already-slim playoff hopes take a sharp decline if Wall's knee injury proves to be trouble.
Washington had a dominant first quarter but fell apart in the second in a 99-92 defeat against Milwaukee on the road.
Elvis may have been "the greatest wingman ever," but the bust also shows the Wizards and Capitals owner's deep love for music.
The point guard, who has long worked to improve the biggest weakness in his game, is shooting a career-high 35.5 percent from three this season.
Madison Square Garden plays host to a matchup of reeling teams Tuesday. Join the discuss.
Beal came off the bench and played just 20 minutes in Saturday's loss to the Hornets.
With the all-star break looming, the Wizards hope that harping on struggles will translate into on-court success.
Dudley is third in the NBA in three-point shooting percentage at 45.3 percent.
Washington blew a 19-point lead Saturday after nearly squandering a 25-point lead against the 76ers Friday.
The Wizards haven't won consecutive games since mid-January.