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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.