The Seattle Seahawks claimed their first NFC West championship since 2016 after topping the Los Angeles Rams.
Seattle sealed a four-year first in the NFL thanks to Sunday's 20-9 victory at Lumen Field, where the Seahawks kept alive their hopes of finishing with one of the NFC's top two seeds.
Aaron Rodgers flexed his muscles and team-mate Davante Adams starred in the Green Bay Packers' rout of the Tennessee Titans.
There were also wins for the Dallas Cowboys, Carolina Panthers and Los Angeles Chargers.
SEAHAWKS IN NFC WEST-CLINCHING WIN
For the fifth time under head coach Pete Carroll, the Seahawks got their hands on the NFC West crown.
The Seahawks (11-4) used a resurgent defense to see off the Rams (9-6), holding Los Angeles to just six points in the second half, while sacking quarterback Jared Goff – who reportedly suffered a broken thumb – three times.
"There were times during the season where everybody had enough statistics to go ahead and blow us out, and like we weren't worth anything on defense," Carroll said.
"But this defense is good, and they've shown it and they've declared it. This is the kind of defense that we've played in years past when we really had good teams down ... the stretch."
Seahawks QB Russell Wilson was 20-of-32 passing for 225 yards, a touchdown and no interceptions, while he also rushed for a TD on three carries.
RODGERS' PACKERS DOMINATE
Huge performances from MVP hopeful Rodgers and wide receiver Adams fuelled Green Bay's 40-14 demolition of the Titans at Lambeau Field.
Rodgers showcased his MVP credentials by going 21 of 25 for 231 yards, four touchdowns and one interception for a 128.1 passer rating.
The Packers quarterback had his 13th game with a 100-plus passer rating this season, tying himself in 2011 and Patrick Mahomes in 2018 for the most such games in a single season in league history, per NFL Research. Both Rodgers (2011) and Mahomes (2018) finished as that season's NFL MVP.
Adams caught 11 passes for 142 yards and three touchdowns, becoming the third player in NFL history to have 100-plus receptions and 16-plus receiving TDs in a season.
He also recorded his ninth successive Sunday Night Football appearance with a touchdown – breaking a tie with Antonio Brown and Rob Gronkowski for the longest such streak in NFL history.
The Packers improved to 12-3 but still need to beat the Chicago Bears in their final regular-season game to clinch the NFC's number one seed.
Titans QB Ryan Tannehill completed just 11 of 24 passes for 121 yards, one touchdown and two interceptions, while Tennessee star Derrick Henry was restricted to 23 carries, 98 yards and no TDs.
COWBOYS STAY ALIVE
The Cowboys remain in the hunt in a wide-open NFC East after defeating rivals the Philadelphia Eagles 37-17.
Coupled with the Washington Football Team's (6-9) 20-13 loss to the Carolina Panthers, the Cowboys (6-9) still have a chance to win the division.
The Cowboys need to beat the New York Giants in Week 17, while the Eagles must take down Washington in order for Dallas to top the NFC East.
Meanwhile, Los Angeles Chargers quarterback Justin Herbert set a new single-season rookie record for touchdown passes in the 19-16 victory against the Denver Broncos.
Herbert broke the record when he threw his 28th TD of the season in the second quarter, while he joined Kansas City Chiefs star Patrick Mahomes as the only players to record 4,000 passing yards through their first 14 starts.
Week 16 scores:
New York Jets 23-16 Cleveland Browns
Baltimore Ravens 27-13 New York Giants
Cincinnati Bengals 37-31 Houston Texans
Chicago Bears 41-17 Jacksonville Jaguars
Kansas City Chiefs 17-14 Atlanta Falcons
Pittsburgh Steelers 28-24 Indianapolis Colts
Seattle Seahawks 20-9 Los Angeles Rams
Dallas Cowboys 37-17 Philadelphia Eagles
Green Bay Packers 40-14 Tennessee Titans
Carolina Panthers 20-13 Washington Football Team
Los Angeles Chargers 19-16 Denver Broncos