The Washington Times - November 23, 2012, 02:33PM

The Redskins believe rookie inside linebacker Keenan Robinson will miss the rest of the season with a torn right pectoral muscle he suffered in Thursday’s victory over the Dallas Cowboys. He’s having an MRI Monday to confirm that, coach Mike Shanahan said Monday afternoon

“Right now it doesn’t look good,” Shanahan said.

SEE RELATED:


It’s the latest in a barrage of injuries the Redskins’ defense is fighting to withstand. They already are without first-string linebacker Brian Orakpo (torn left pectoral muscle), defensive end Adam Carriker (torn right quadriceps muscle) and safety Brandon Meriweather (torn ACL, right knee). Linebacker London Fletcher, whom Robinson replaced in each of the last two games, is affected by a sprained left ankle.

According to the NFL, Robinson played 19 defense snaps (about 25 percent) in each of the last two games, wins over Philadelphia and Dallas in a five-day span. The fourth-round pick out of Texas also is a mainstay on the kickoff return and coverage units. When he wasn’t replacing Fletcher, he played some in the Redskins’ sub packages, particularly in goal-line situations.

Losing him would affect Washington’s depth at inside linebacker, and it also would cost him experience in some meaningful games as the Redskins make a push in the NFC East.

“I think he’ll be an every-down player for years to come,” Shanahan said. “He’s got speed. He’s got quickness, and he’s not afraid to hit, and extremely bright, so that’s a good upside.”

Robinson appeared to suffer the injury while tackling Dallas tight end Jason Witten with 1:51 remaining in Thursday’s 38-31 win. Robinson wrapped up Witten with his right arm, and Witten rolled over during the tackle in a way that stretched Robinson’s chest.

Robinson stayed in the game for the final six defensive plays, but his right arm did not appear to be of much use.

Fletcher on Thursday aggravated the left ankle he sprained against Philadelphia last Sunday. Shanahan said he didn’t expect Fletcher to play against Dallas because of the short amount of time between games, but Fletcher extended the NFL’s longest active consecutive games played streak to 35.

“I’m never counting him out again,” Shanahan said.

But with Fletcher fighting the ankle injury, Robinson was one of two capable backups, along with Lorenzo Alexander. His absence would leave the Redskins even more shorthanded.