"Big Three" power Steelers by Dolphins 30-12
Pounding away relentless at a defense that hardly seemed interested in stopping him at frigid Heinz Field, Bell ran for a franchise postseason record 167 yards and two scores .
The Steelers (12-5) led by two touchdowns before the game was 10 minutes old on long touchdown passes from Roethlisberger to Brown.
Given a chance to prove their first playoff berth in eight years wasn't a fluke despite being outgained and outscored during the regular season, Miami never found a rhythm.
The problem wasn't the single digit wind chill or a vicious hit absorbed by quarterback Matt Moore in the second quarter as much as it was the Steelers.
Pittsburgh sacked Moore five times, forced turnovers on three consecutive possessions in the middle of the game, and never really let the Dolphins up off the deck.
Pittsburgh (12-5) ran off its eighth straight victory to set up a visit to AFC West champion Kansas City (12-4) next Sunday.
All he did in his postseason debut was break Hall of Famer Franco Harris' team mark for yards rushing in a playoff game.
The Steelers scored on their first three possessions, and Miami's playoff victory drought was well on its way to 17 years and counting.
The Dolphins badly missed cornerback Byron Maxwell (ankle), out a third straight game.