Washington Redskins Coach Mike Shanahan said he agreed with a critical offensive pass interference call against Santana Moss Sunday that wiped out a game-tying touchdown. But he said he remains convinced that officials were wrong on a call against London Fletcher, who was flagged for unnecessary roughness on a tackle of Tom Brady.

Shanahan said he was “pleasantly surprised” with how well O.J. Atogwe played on eight snaps as a backup safety Sunday. The coach said he had observed a less effective Atogwe in practice, but that the safety played well and earned more opportunities based on his play in the game.

Shanahan said he was disappointed with cornerback DeAngelo Hall both for an unsportsmanlike conduct penalty and for giving up on the play in which Patriots tight end Rob Gronkowski ripped off a big gain after breaking tackles by Reed Doughty and DeJon Gomes.

Shanahan said Willie Smith did well at left tackle, but will continue to compete with Sean Locklear in practice for the starting duties this week.

Shanahan said tackle Jammal Brown’s strained right groin remains sore and the team doesn’t know how long he will be sidelined. Tyler Polumbus will play at right tackle if Brown cannot.

Fullback Mike Sellers’ right elbow also is sore, but was only hyper-extended, without additional damage. No word yet on how long he will be sidelined.

Shanahan said he was proud of how the offense moved the ball despite being without three starters.

Shanahan was asked if Rex Grossman has played well enough for the Redskins to re-sign him and the coach said only that all of the players are being evaluated. “This time of year, especially being out of the playoffs, everyone’s playing for jobs, coaching for jobs,” Shanahan said.

Shanahan said it’s still “not perfectly clear” whether Fred Davis and Trent Williams can spend the final weeks of the season at the facility despite their suspensions.