Pittsburgh Steelers (4-1) at Miami Dolphins (3-2)

The Steelers look like the class of the AFC, especially after Ben Roethlisberger’s stellar season debut. The Dolphins look great one week and then iffy the next. Which team shows up Sunday?

Where: Sun Life Stadium, Miami, Fl., 1 p.m.

WagerWeb.com odds: Pittsburgh -3, 40

Trends: The over is 21-10-1 in the Steelers last 32 games vs. the AFC; Miami is 15-41-1 against the spread in their last 57 home games; The under is 6-2 in Miami’s last 8 games as an underdog.

Key Injuries: Pittsburgh: Out – T Willie Colon; Questionable – G Trai Essex, LB James Harrison; Probable – RB Rashard Mendenhall. Miami: Out – DT Jared Odrick, CB Will Allen; Questionable – LB Karlos Dansby, G John Jerry.

What To Look For: Pittsbugh QB Ben Roethlisberger makes his return to the road this weekend and he does it in a stadium where he threw for three touchdown passes in a 30-24 Steeler victory in January. This time he will find a Miami team looking to snap a four-game home losing streak.

The Steelers look like LB James Harrison will be back on the field, despite his timeout during the week while he contemplated the NFL’s new rules regarding hard hits. If so, the Dolphins will be facing one of the most dynamic defenders in the league. Even if he might have to tone down his hits. That will be bad news for Dolphins QB Chad Henne, who has been tantalizingly good at times and just as bad at others this season. Less time in the pocket will not help him find his No. 1 receiver, Brandon Marshall (37 rec. 467 yds, 1 TD).

Pittsburgh managed to hold itself together in Roethlisberger’s absence, rolling to a 3-1 record and using every quarterback on the roster.

The Steelers are 4-0 in Miami since 1998.