Wall, who's suffering from tendinitis in his right knee, will miss his eighth game this season, and Blatche is out with soreness in his left knee. Blatche, who missed two games last week with a bruised right hip, will miss his third game.
Wall has also missed games with injuries to his left foot and left knee.
He's averaging 16.7 points and 8.9 assists in 15 games.
Wizards coach Flip Saunders dismissed talk that Wall's shoes caused a problem. Saunders said that the knee injury is due to inactivity.