Cleveland Browns quarterback Baker Mayfield (#6) celebrates after the Browns defeated the Pittsburgh Steelers 24-22 in an NFL football game, Sunday, Jan. 3, 2021, in Cleveland. (AP Photo/David Richard)

Welcome to the postseason, Cleveland.

Cleveland?

The Browns ended their string of non-playoff seasons on Sunday with a tighter-than-expected 24-22 victory over archrival Pittsburgh, which sat many of its starters. Cleveland returned to the NFL in 1999, made the playoffs in 2002, and then, zilch. Until now.

“It’s a moment I’ll never forget,” quarterback Baker Mayfield said. “But we’re not satisfied. We expected to be here.”

The NFL’s two longest playoff droughts have been snapped with the advancements of Tampa Bay and Cleveland, both 11-5. The Buccaneers, who downed Atlanta 44-27, already were in and secured the fifth seed in the NFC, setting up a trip to the sub-.500 NFC East winner Washington (7-9), which defeated Philadelphia on Sunday night football to get in while eliminating the Giants, who ended Dallas’ season earlier Sunday. Tampa Bay’s last trip to the postseason was 2007.

The Jets now have the unenviable streak of going home early, beginning in 2011.

Cleveland gets a rematch with the Steelers, who will have back their regulars in Pittsburgh next weekend. Regardless, this is an unfamiliar feeling in the Dawg Pound.

“There are hundreds of thousands, not just here,” defensive end Myles Garrett said of the Browns’ fan support. “The 12,000 here, that was great, but there are so many Browns (fans) all over the world who were happy to see us get this win and finally get into the dance.”

Green Bay (13-3) is the top seed in the NFC after beating Chicago 35-16, but the Bears (8-8) got in as the lowest conference seed when the Rams (10-6) defeated Arizona 18-7. Los Angeles is No. 6 in the NFC field and travels to No. 3 Seattle (12-4), while the Bears go to No. 2 New Orleans (12-4). The Cardinals (8-8) finished the season with two straight losses and are out.

No. 5 Baltimore (11-5) took the top wild-card seed in the AFC with its 38-3 romp at Cincinnati. The Ravens will be at No. 4 Tennessee (11-5), the winner of the AFC South thanks to a wild 41-38 victory at Houston in which Derrick Henry became the eighth player in NFL history to rush for 2,000 yards in a season.

The Titans knew they owned a playoff berth after Miami (10-6) lost at Buffalo 56-26. No. 7 Indianapolis (11-5) then ended the Dolphins’ chances when it took care of Jacksonville, 28-14.

“It’s huge. … It’s something we set out to do this year was to go win the division, and we were able to do that,” quarterback Ryan Tannehill said. “We’ll enjoy that, we’ll enjoy being able to play a home playoff game at home and have a big opportunity this week to go get another win.”

The Kansas City Chiefs, who rested many of their starters and lost to the Los Angeles Chargers, earned the AFC’s No. 1 seed and a first-round bye. The defending champs will play the lowest remaining seed still standing in the Divisional Round in two weeks.

Indy, coached by Frank Reich, heads to No. 2 Buffalo for an intriguing matchup: In January 1992, Reich filled in as Buffalo’s QB and led the Bills to the NFL’s biggest comeback victory, 41-38 in overtime against the Houston Oilers.

“We’ve said this from Day 1 in training camp: We believe we have a team that is good enough to win it all and that has to start by getting in the playoffs,” Reich said. “Now that we’re here, that’s our belief. Playoff football is unique, so we feel like our running game is ascending at the right time for this time of year, for playoff football. And I believe our run defense will continue to shine, so I feel really good about where we are as a football team.”

With the win, the Bills (13-3) clinched the AFC’s No. 2 playoff seed and matched a single-season record for victories, set in both 1990 and ’91, when they made the Super Bowl.

Not making the postseason for the first time since 2008 is New England (7-9). Of course, the main reason for that Patriots streak of success and six Super Bowls, Tom Brady, is now quarterbacking the Bucs — and in the playoffs.