Once again the coaches and players will report to Redskins Park on a Monday morning, bracing themselves for bad news on the injury front. Left tackle Trent Williams injured his knee on Graham Gano’s missed 52-yard field goal attempt in the 27-24 overtime loss to the Cowboys.

Coach Mike Shanahan said Williams suffered an MCL injury and will undergo an MRI Monday.

“I don’t think nothing’s torn,” said Williams, the No. 4 overall pick in the 2010 draft

Williams said he’d never suffered a similar injury and was hobbling after the game. He said he felt the pain immediately as players piled up on the field goal attempt.

“They just came down on the outside of my leg,” he said.

The Redskins were also without cornerback Josh Wilson for the final stretch of Sunday’s loss. He injured his hamstring 5 1/2 minutes into the fourth quarter and never returned.

“I’m alright,” he said, “just a little sore.”

Wilson will also undergo an MRI on Monday to determine the full extent of his injury.

“Any time you’re dealing with those hamstring injuries, it’s never good,” Shanahan said.

As for Williams, the offensive line could hardly stand to lose him for any length of time. The Redskins on Monday used their fifth combination of offensive linemen in the past six weeks. Tyler Polumbus saw his first start of the year at left guard, playing in place of injured rookie Maurice Hurt.

The team’s list of injured players has grown weekly during the team’s six-game losing streak, particularly on offense. Already on injured reserves: guard Kory Lichtensteiger, tight end Chris Cooley, receiver Leonard Hankerson and running back Tim Hightower. In addition, receivers Santana Moss and Niles Paul were both inactive Sunday, though it’s possible the pair returns next Sunday at Seattle.

“It’s very disappointing,” Williams said. “Any time you get hurt, it’s disappointing.”