The Redskins’ two healthy starters on the offensive line for Thursday night’s game against the Buffalo Bills were center Will Montgomery, left, and Trent Williams, right. Williams injured his foot during the game. (John McDonnell/THE WASHINGTON POST)

X-rays were negative, said Williams, who was one of only two first-string offensive linemen healthy for the game. “I’m fine… It’s really nothing,” he said.

Williams said he “just got stepped on” during wide receiver Pierre Garcon’s 20-yard touchdown on a screen pass from rookie quarterback Robert Griffin III. All the team’s offensive starters left the game after Garcon’s touchdown, which came on the Redskins’ third possession.

It’s unclear, Williams said, whether the injury will force him to miss any practice time.

“We’ll see,” Williams said. “It depends on how I feel. It’s nothing serious.”

Williams was limping after the game. The Redskins can ill afford to lose another offensive lineman, especially Williams. They played Thursday night’s game without three injured starters on the offensive line—right tackle Jammal Brown and guards Kory Lichtensteiger and Chris Chester.

“I felt like we did pretty good,” Williams said. Quarterback Robert Griffin III “had a lot of time to make decisions in the pocket. That’s all we can ask for.”