Owings Mills, MD (My Sportsbook) - Baltimore Ravens middle linebacker Ray Lewis injured his hamstring during Sunday's 10-6 loss to the Chicago Bears and it is a possibility he could miss Week 8's game against Pittsburgh on Monday night.

"It's a possibility," said Baltimore head coach Brian Billick on if Lewis and safety Ed Reed would miss the game.

Lewis, who has missed just 12 games in his career due to injury, entered Sunday's game with a problem in the same hamstring, just higher up. This injury is lower in the hamstring and according to Billick much more treatable.

"We have an extra day," said Billick. "We'll see where we are as we go."

If Lewis can't go, outside linebacker Tommy Polley would move inside and Bart Scott would start in Polley's position.

Reed also missed Sunday's game at Chicago with a high ankle sprain, an injury he suffered in Week 6. He was the Defensive Player of the Year last season.

"Everybody deals with injuries, to varying degrees at different times," said Billick. We've been there before. The next guy steps up and that's the mentality."

On the positive injury front, Ravens' wide receiver Mark Clayton may be back on the field versus the Steelers after missing the last game with an ankle injury.

"His is probably the best shot," said Billick. "(With) the injury, the soreness where it is, there is a pretty decent chance (he'll play). I'll have to wait until the end of the week (to know for sure)."