While he declared quarterback Robert Griffin III “good to go” for the season opener Monday against Philadelphia, Redskins Coach Mike Shanahan said that starting strong safety Brandon Meriweather’s status remains uncertain.

Meriweather has spent the preseason working his way back from surgery last fall to repair a torn right anterior cruciate ligament, and last Thursday played in his first game since Nov. 18. But Shanahan said that Meriweather missed Monday’s practice with a groin injury, and that he can’t yet determine his availability for next week’s game.

“I really don’t know. He was a little bit sore today,” Shanahan said. “His groin was still a little bit tight. He did not practice today, and I’ll tell you more throughout the week.”

It wasn’t clear how Meriweather’s knee responded to his first game action.

Meanwhile, nose tackle Barry Cofield did practice on Monday while wearing a club cast on his fractured right hand, and said he hopes to play next week.

Cofield suffered the injury early in Washington’s second preseason game, in which he recorded two tackles and a sack and an additional hit on the quarterback in 18 plays.

Cofield had sat out the last two weeks of practice and final pair of preseason games.

Cofield maintained that he doesn’t expect the cast to seriously limit him. Cofield said he plans to experiment with several different types of casts. One version could be the club that he used in practice on Monday, another could be similar, but with his fingers free. Cofield said he hadn’t officially been ruled in for the game, but that he aimed to prove himself in practice with the intention of playing.

“It depends on what I’m able to do,” Cofield said. “If coach feels like I’m operating at a high enough level to help the team, then I’ll be out there. I’m going to approach it like I have two good hands, play all my technique, play hard, fly around, and hopefully coach feels confident enough to put me out there.”

Backup quarterback Kirk Cousins (mid-foot sprain) also practiced fully on Monday, and said that he is “100 percent” ready to go for Monday’s game.

Have a Redskins question? E-mail Mike Jones at mike.jones@washpost.com with the subject line “Mailbag question” for him to answer it in The Mailbag.

What’s ahead:

● The next Redskins to hold news conferences are Mike Shanahan and Robert Griffin III after practice on Wednesday.

● The NFL season kicks off Thursday night with the Ravens in Denver.

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