Washington Redskins cornerback DeAngelo Hall has sprained ligaments in his right ankle and could miss the rest of training camp.

Hall wearing a walking boot during the team's practices Tuesday. He was hurt Monday when he lost his footing trying to defend a receiver.

Left tackle Trent Williams sprained his left wrist during Tuesday's practice and had it heavily taped, but he said the injury wasn't serious.

Hall becomes the fourth Redskins defensive player to suffer a setback since the opening of camp. Defensive end Adam Carriker had another surgery on his leg and will be out several more months at least. Linebacker Keenan Robinson is out at least three months with a torn pectoral muscle, and defensive end Jarvis Jenkins was hit with a four-game drugs suspension.