The Steelers suffered one of the worst losses in recent memory during Week 1, when the Baltimore Ravens throttled them 35-7 in a game that, to many, proved that the Steelers were washed up, old and going to be unable to make a true playoff run.
Half the season later, the Steelers are 6-2, back in first place in the AFC North and the conference as a whole. They are no longer old and slow. They're dangerous and looking like a team headed for something special.
Here's a look at five things the Steelers needed to learn from Week 1 so that they can avenge that loss on Sunday.