The Cleveland Browns have secured an NFL play-off spot for the first time since 2002 with a 24-22 win over the Pittsburgh Steelers on the final day of the regular season.
Nick Chubb and Jarvis Landry each ran for a touchdown and Baker Mayfield threw for another.
It ended the NFL's longest active post-season drought.
The Green Bay Packers clinched the top seed in the NFC Conference while the Tennessee Titans won the AFC South.
The Baltimore Ravens, the Indianapolis Colts, the Los Angeles Rams and the Chicago Bears also qualified for the play-offs, which start on Saturday.
Washington took the final play-off spot with a 20-14 victory over the Philadelphia Eagles to win the NFC East division despite a 7-9 record.
They are just the third NFL team to reach the play-offs with a losing record (excluding the strike-shortened 1982 season). The Carolina Panthers were the last to do so in 2014, following the Seattle Seahawks in 2010 - both went on to win their play-off openers.
The Bears lost 35-16 to Green Bay to finish 8-8 but still qualified for the wildcard round because of the Arizona Cardinals' 18-7 defeat by the Rams.
NFL play-off schedule (Kansas City Chiefs and Green Bay Packers get first-round bye)
Wildcard round - Saturday, 9 January
Indianapolis Colts @ Buffalo Bills - 18:05 GMT
Los Angeles Rams @ Seattle Seahawks - 21:40 GMT
Tampa Bay Buccaneers @ Washington Football Team - 01:15 GMT on Sunday
Sunday, 10 January
Baltimore Ravens @ Tennessee Titans - 18:05 GMT
Chicago Bears @ New Orleans Saints - 21:40 GMT
Cleveland Browns @ Pittsburgh Steelers - 01:15 GMT on Monday
Divisional play-offs - 16 and 17 January
AFC and NFC Championship games - 24 January
Super Bowl 55 - 7 February