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Davis passed concussion tests, which included a hospital visit, after absorbing a helmet-to-helmet hit in the fourth quarter.

“I was a little dizzy afterwards, but I’m good today,” Davis said. “I worked out yesterday and today.”

Receiver Pierre Garcon (right foot) and safety Brandon Meriweather (left knee) were limited in practice.

Worthington gets his shot

Doug Worthington acknowledged it’s been a long time coming. Defensive end Adam Carriker’s season-ending quadriceps injury wasn’t what the 25-year-old wanted to see, but this week Worthington was elevated from the practice squad to the roster.

“It’s a blessing in disguise,” Worthington said. “Adam’s a great leader on this team, he’s never going to be replaced. But next man up, and coach Shanahan and [defensive coordinator Jim] Haslett gave me a great opportunity to step up and contribute to the team.”

Worthington was on the roster for the final two weeks last season but remained inactive for both games. Given the Redskins’ need at defensive end, he could make his NFL debut Sunday.

His specialty is stopping the run.

“With this 3-4, long arms, tall guy, you’ve got to play lateral and whatnot, and coach [Jacob] Burney has done tremendous with me the last year and a half with working on my technique and getting better,” Worthington said. “Getting from the run to the pass is something I’ve been working on this offseason.”