Trent Williams improving, hopes to play SundayLeft tackle Trent Williams, who is suffering from knee and toe injuries, continued to improve and hopes to practice Friday in an attempt to play against the St. Louis Rams, Coach Mike Shanahan said Thursday."We'll get a chance to see how he feels [Friday]," Shanahan said of the rookie, who has played well in his first two games. Williams was "much better today. He was able to jog and be on the treadmill for a while, so we'll check him out [Friday]."With Williams sidelined Thursday, tackle Jammal Brown, who started the first two games on the right side, worked on the left side and fared well. "He looked good," offensive coordinator Kyle Shanahan said. "He's getting better each day, getting more comfortable with what we do and continuing to get better."Backup tackle Stephon Heyer, who replaced Williams after Williams was hurt in Week 2, also has practiced at left tackle. "He's looked good," Kyle Shanahan said. "There's only so many linemen on each team, so he's gotten reps since he's been here - a ton of them."The Redskins are encouraged because Williams's knee seems to have responded well this week. "I think its more the toe," Mike Shanahan said. "The knee, I think it's a little bit sore. But more the toe than the knee and that's a good sign."Free safety Kareem Moore, who missed the first two games while recovering from knee surgery, remained on track to return to the lineup Sunday against the Rams at the Edward Jones Dome. "I'm looking forward to him playing," Mike Shanahan said. "He's been hurt for quite a long time right now."He did a great job through our OTAs [organized team activities] and our summer [conditioning] program. I'm hoping that he comes back and plays at a high level. He's a football player. He's got a feel for coverages and when to break. You either have it back there when you're deep or you don't. He's a playmaker."Defensive tackle Albert Haynesworth, inactive against Houston because of an ankle injury, participated fully in practice. "I think he's fine," Mike Shanahan said. "He had a good practice today. It didn't look like there were any setbacks. Hopefully, no setbacks tomorrow."Wide receiver Anthony Armstrong (groin) and safety Chris Horton (ankle and groin) did not participate in practice.