The Patriots had never won a Super Bowl by more than six points until Sunday.
The Chiefs are 6-1 favorites to win the Super Bowl next year, while the Patriots and the Rams are both 8-1.
The Patriots are 2.5-point favorite going into Super Bowl LIII.
Sunday night marks the 53rd playing of the Super Bowl.
Neither Los Angeles nor New England reported ay injuries ahead of Sunday's game in Atlanta.
Tom Brady could become the first player in NFL history to win six Super Bowl rings.
Brady will become the oldest quarterback to win the Super Bowl if the Patriots beat the Rams on Sunday.
The Patriots quarterback told a young fan he "loves the haters" and "wishes them the best."
The no-call cost the Saints a shot at reaching Super Bowl LIII and completely overshadowed the outcome of the game.
Lawsuits against NFL and commissioner Roger Goodell want game to be replayed.
Bookmakers have the New England quarterback at even odds to win an unprecedented fifth Super Bowl MVP award.
Championship Sunday sees the Rams travel to New Orleans, while the Chiefs host the New England Patriots.
The Titans face the Colts in a winner-takes-all showdown, while three divisional titles are up for grabs in the AFC.
The Houston Texans and the Seattle Seahawks will be in the postseason, but Pittsburgh's season is almost over.
The Saints can win the NFC for the first time in nine years, while the Seahawks and Ravens can secure wild-card spots.
The Bears have a first NFC North title in eight years, while the Chargers are back in the playoffs for the first time since 2013.
The Saints, Rams and Chiefs can all secure first round-byes, while the Patriots and Texans can win divisional titles.
The Saints, Rams and Chiefs have clinched a playoff spot, but the Patriots and Texans have to wait until at least next week.
The Bears moved to 9-6 after beating the Rams 15-6 on Sunday night.
The Chiefs head coach launched a remarkable tirade against officials on Monday Night Football.