Mike Shanahan stopped the Washington Redskins’ practice briefly at one point Friday after a series of mistakes and sloppy play by his offense.

All of the team’s offensive players gathered around Shanahan for a short address, then practice resumed. But later, Shanahan didn’t appear overly upset about his offense’s practice-field execution.

The coach spoke matter-of-factly about young players having to process a lot of different information while being put in various practice situations. Still, he made it clear that lapses in concentration by his players would not be tolerated without a reprimand.

 “We put the team through a lot of situations today. . . . They didn’t know what the plays were so it was kind of like game-type situations where it could have been anything,” Shanahan said. “We had a few offsides and that normally happens when you put young guys in there that don’t have the script and are not really sure what play is coming. . . . We try to do that to our team after about a week of practice and people are going to make mistakes.”

 — Shanahan said he thinks Tyler Polumbus has done a good job while filling in at right tackle for Jammal Brown.

Brown, according to Shanahan, was at the team’s facility Friday. Brown is receiving treatment for his ailing hip and the Redskins have not given a timetable for his return.

— Shanahan said he’s hopeful that wide receiver Anthony Armstrong will miss only a few days due to a strained AC joint in his right shoulder.

   — The team still had no information, Shanahan said, on the status of defensive lineman Kentwan Balmer, who cleared his belongings from the team’s hotel this week and has been absent from camp.

“I'm just hoping he’s okay,” Shanahan said.

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