Hall hobbled off the field during the third quarter after suffering a non-contact injury. The veteran returned to practice this summer after twice tearing his lft Achilles.
Hall was carted off the field with the injury to right foot.
Lauvao suffered an ankle injury in the first half and did not return. The left guard was one of the most improved performers on the team during the first two games, helping to key Washington's potent running game.
Josh LeRibeus, who has struggled during much of his three-plus year career, replaced Lauvao in the starting lineup.