Only twice in NFL history has a team ever gone undefeated in the regular season in the Super Bowl era. Only once has a team gone 16-0. That was the New England Patriots in 2007, but they went on to lose the Super Bowl, which triggered a celebration for the alumni of the Miami Dolphins team of 1972 that remains the only unbeaten team.
Could the 2020 Baltimore Ravens be next? Oddsmakers and analytics have them favored in all 16 games this year. Although they were defeated, 28-12, by the Tennessee Titans in their first postseason game, they went 14-2 in the regular season, their best record in franchise history, which included a 12-0 run to bulldoze their way into the playoffs.