MFN 81 has a record for 2 undefeated teams in the Super Bowl
I think this is the 1st instance of 2 undefeated teams in the Super Bowl together to face each other
If not it is still 1st time that a rematch between the previous years super bowl teams that both came back undefeated.
they played in the 2020 Super Bowl and now they are in the 2021 Super Bowl
League =
https://mfn81.myfootballnow.com/the 2 undefeated teams are Cleveland Browns and Green Bay Packers
Cleveland Browns ( Mcarovil ) =
https://mfn81.myfootballnow.com/team/12Green Bay Packers ( mardn72 ) =
https://mfn81.myfootballnow.com/team/27