Pittsburgh did it without a number of starters, including Ben Roethlisberger, and with their old formula for winning—a strong running game and tough defense.
Charlie Batch was efficient in place of Roethlisberger, and Rashard Mendenhall was able to run well behind a second-rate offensive line.
Though the defense could not stop Steven Jackson, they did enough to shut out the hapless Rams to move the Steelers record to 11-4.
The victory was an important one. First, they were able to get the win with a number of injuries at key positions, and second, they kept pace with the Baltimore Ravens.
With a win next week and a Ravens' loss, the Steelers could earn the AFC North title and a first-round bye.
Here's the positional grade report for the Steelers victory over the Rams.