1. Ben Roethlisberger foils the Ravens again. The Pittsburgh quarterback has a knack of brushing off a pass rusher and delivering the game-changing play against the Ravens. There's a reason why the Ravens haven't beaten him since 2006.
2. James Harrison wreaks havoc. The Steelers pass rusher has six sacks in six games against the Ravens. This time, he goes against left tackle Michael Oher, who won't be at full strength with a knee injury.
3. Up-and-down run defense takes another nosedive. The Ravens bottled up Tampa Bay's LeGarrette Blount, but they've struggled to shut down running backs consistently. Pittsburgh's Rashard Mendenhall, the NFL's seventh-leading rusher, is coming off a 151-yard rushing effort.