The Redskins had a couple of surprise entries on their Wednesday injury report, even as two key offensive players returned to full practice.Starting free safety Oshiomogho Atogwe did not participate in practice because of a knee injury. There was no knowledge of the injury until after media availability had ended for the day.Left tackle Trent Williams also was out of practice with a sprained ankle. He is expected to miss at least two weeks.Wide receiver Anthony Armstrong (hamstring), cornerback Phillip Buchanon (neck) and running back Tim Hightower (shoulder) participated fully in practice. All three of them missed last Sundays game.Reserve cornerback Byron Westbrook was limited in practice with a hamstring injury.For the Carolina Panthers, linebacker Omar Gaither (knee), tight end Greg Olsen (toe), safety Jordan Pugh (head), and linebacker Thomas Williams (head) did not practice. Of the four, only Olsen is a starter.