Trent Williams Redskins left tackle Trent Williams tests his injured right knee during Sunday’s game. (John McDonnell/Washington Post)

Redskins coach Mike Shanahan said Monday that left tackle Trent Williams, who has a bone bruise in his right knee, will be evaluated on a daily basis and the team won’t know about his availability for Sunday’s game until later this week.

Shanahan said running back Evan Royster has a strained patella tendon and cornerback Cedric Griffin has a hamstring injury.

Asked about the unsportsmanlike conduct penalty assessed to Kyle Shanahan, the team’s coordinator and the coach’s son, Shanahan said: “You would like cooler heads to prevail,” but explained that the offensive coordinator was upset because officials said the game was over when it should not have been.

Mike Shanahan said the Bengals did a good job executing on the game-opening Wildcat play that resulted in a 73-yard touchdown pass. He expects to see more of those schemes this week against Tampa Bay and has been studying similar plays run by new Tampa Bay coach Greg Schiano when Schiano was at Rutgers.

Shanahan said he doesn’t yet know if Pierre Garçon (foot) or Brandon Meriweather (knee) will be available for Sunday’s game.

Shanahan said the Redskins will continue to run Robert Griffin III, but that he doesn’t want the quarterback taking so many big hits as the season continues. He praised Griffin’s fearlessness, however.

Shanahan stressed the need for the secondary to play better if the defense is to improve.

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