OWINGS MILLS, Md. (AP) — John Harbaugh was in his first year as Baltimore’s coach, Mike Tomlin in his second for Pittsburgh. After a pair of clashes that came down to the wire during the 2008 regular season, the two met again in the AFC championship game.

They were just getting started.

Now those two are the longest-tenured coaches in the NFL, and under their stewardship, the Ravens and Steelers have kept their rivalry humming. For 18 weeks, they battled for the AFC North title this season, and tonight in Baltimore, Harbaugh and Tomlin will face each other in the playoffs. It’ll be their fourth postseason matchup and the fifth playoff meeting overall between the rival franchises.

“Going to Baltimore, particularly in playoff football, is something to be respected. I expect it to be a hostile environment,” Tomlin said. “I welcome that, to be quite honest with you. It’s important that we smile in the face of that. As a collective, it’s just simply a tax to pay for not winning the division and we pay that.”

The Ravens (12-5) won their final four games of the regular season while the Steelers (10-7) dropped their last four. That gives Baltimore a chance to host Pittsburgh in the postseason for the first time. Their previous four playoff meetings — in the 2001, 2008, 2010 and 2014 seasons — were all in the Steel City. The home team won three of them.

In terms of stakes, it’s hard to top that AFC title game in January 2009, which Pittsburgh won 23-14. The brutality of the rivalry was on full display, with Ravens running back Willis McGahee having to be carted off the field after a hit by Ryan Clark.

That was the first of three playoff meetings in a seven-season span between the Steelers and Ravens. In January 2011, Pittsburgh held Baltimore to 126 total net yards in a 31-24 win. Four years after that, the Ravens ousted the Steelers with a 30-17 victory.

It’s now been a decade since this matchup last occurred in the playoffs, but recent regular-season meetings have been tightly contested. Baltimore’s 34-17 victory last month was a change, both because Pittsburgh had won eight of its previous nine against the Ravens, and because all nine of those games were decided by seven points or fewer.

This is the only matchup of opponents from the same division this weekend, and there weren’t any in the playoffs last season. But the postseason two years ago included 49ers-Seahawks (NFC West), Bills-Dolphins (AFC East), Bengals-Ravens (AFC North) and Eagles-Giants (NFC East).