Who won: Steelers.
The impact: One of the primary goals of Pittsburgh’s defense was to stop Ajayi, who ran for 204 yards and two touchdowns in the first game against the Steelers on Oct. 16. Pittsburgh achieved that goal from the outset. Ajayi found little room to run throughout the game and finished with only 33 yards on 16 carries and without a touchdown. The Dolphins were held to 52 rushing yards overall. To add to the Dolphins’ misery, Ajayi left the game with 8:23 remaining in the fourth quarter after he reaggravated the same shoulder he injured in Miami’s 34-31 win over Buffalo two weeks ago.