Redskins coach Mike Shanahan said Monday that left tackle Trent Williams (grade one MCL sprain) and cornerback Josh Wilson (grade one hamstring strain) will be evaluated throughout the week. But Shanahan is encouraged that their injuries aren’t as serious as they could have been, and that they have not been ruled out for Sunday’s game in Seattle.

Shanahan said if safety LaRon Landry (Achilles) can practice this week, he may be able to play Sunday. He said Landry was held out of Sunday’s game against Dallas because he couldn’t practice last week.

Santana Moss will take part in some catching drills today and tomorrow to determine whether his hand has healed enough for him to play at Seattle.

Shanahan said he is “very disappointed” in kicker Graham Gano, who missed two field goals Sunday. The coach said Gano remains the team’s kicker, however, and that there would have to be someone who could really help the team for him to consider bringing in another kicker for an audition.

Shanahan said he was watching the Dallas snapper on the timeout he called just before Dan Bailey hit the winning kick for the Cowboys in overtime. At the time, Shanahan s aid, he wasn’t aware that Dallas QB Tony Romo was about to call timeout. Had Dallas called timeout before time ran out, without having one, the game clock would have been re-set to 25 seconds, but if the play clock had expired, there would have been a delay of game penalty.

Shanahan said he was proud of DeAngelo Hall for publicly taking responsibility for the Dez Bryant catch that set up the winning field goal. “That’s the mindset you want, for perfection,” Shanahan said. He added “I’ve got a lot of belief in DeAngelo and know he’ll come back hard.”

Shanahan thought the offensive line did a “good job overall” despite having a new left guard in Tyler Polumbus.

Shanahan said he has a lot of confidence in running back Roy Helu, and although he hasn’t started, he has gotten more reps than the team’s other backs. The coach said he doesn’t want to put too much pressure on Helu, but as he continues to prove himself, his workload will continue.

Shanahan said the official told him that the Fred Davis fumble was too close a call to overturn. The official said that had Davis been ruled down, he wouldn’t have overturned that call either because it was too hard to tell on the replay.