Miami is making its first playoff appearance since 2008 and is looking for its first postseason win since the wild-card round in 2000. Quarterback Matt Moore will make his first postseason start for the Dolphins with Ryan Tannehill out because of an injury.

With the game-time forecast of around 20 degrees, the Dolphins put footballs used by the team's place-kicker and punter in a freezer before practice to simulate conditions for Sunday's game.

Miami beat Pittsburgh 30-15 in October as Jay Ajayi ran for 204 yards and two touchdowns.

"One of those weird days in football," Steelers guard David DeCastro said of his team's struggles in that game. "Sometimes you're going to have one of those weeks."

Ajayi is one of four players in NFL history with three games of at least 200 rushing yards in a single season.

The Steelers are 34-23 in the postseason, tied with Dallas (34) for the most total playoff wins all time.

The Steelers' offense led by quarterback Ben Roethlisberger, running back Le'Veon Bell and wide receiver Antonio Brown will be in the lineup for the first time in a playoff game.