The 1972 Miami Dolphins were able to pop champagne early this season.
With the Buffalo Bills and Philadelphia Eagles both losing on Sunday, zero undefeated teams remain in 2025.
It marked just the fourth season in the Super Bowl era that there are no undefeated teams entering Week 6, according to NFL Research. The last time there were no 5-0 clubs was in 2014, when the Arizona Cardinals and Cincinnati Bengals tied as the last undefeated teams, losing in Week 5. It's the second-earliest point we've been without an undefeated team in the SB era.
Earliest seasons with zero undefeated teams in Super Bowl era:
- 1970: Week 5
- 2025: Week 6
- 2014: Week 6
- 2010: Week 6
By virtue of playing the night game on Sunday, the Bills were the last undefeated team. It marked just the second season in the Super Bowl era in which the Bills were the last undefeated team (also 1980 -- started 5-0, finished 11-5, lost in Divisional Round at San Diego Chargers).
The early season success hasn't been an indicator of February parties in recent years. The 2006 Indianapolis Colts are the most recent "last undefeated team" to win the Super Bowl that season. The 18-season title drought by such teams is three times the previous famine (six-season droughts from 1966-1971 and 2000-05).
