Updated

Sitting in front of his locker Sunday night, Washington Redskins starting left tackle Trent Williams winced as he pulled his jeans over his injured knee.

The fourth overall pick in this year's draft said he'll have an MRI exam after feeling pain in his left knee and a toe after another player fell on him with about 1½ minutes left in the fourth quarter of Washington's 30-27 overtime loss to the Houston Texans.

Williams was helped off the field and did not return to the game.

"Somebody landed it on it wrong," Williams said.

He said he was given an initial test on his left ACL, and he passed. But otherwise, Williams wasn't sure when he might know the extent of his injury.

"It's my first time dealing with something like this," he said.

Redskins coach Mike Shanahan said he wouldn't know anything specific about Williams' injury until after medical tests.

Williams said after the game his leg felt sore.

"I just want to get back out there on the field. I just hate having to sit that last drive out and watch my team playing overtime without me," he said.

Washington safety LaRon Landry bruised his left wrist in the game. He called it "nothing major."