Logan Paul fit in a warm-up match against the Gronkowski family as he readies for his June 6 fight against Floyd Mayweather Jr. 

Super Bowl champion tight end Rob Gronkowski served as the referee as Paul went one-on-one with his brothers Glenn, Chris and Dan Gronkowski before taking on their father, Glenn, all of whom also played in the NFL. 

All four were defeated in their one-round bouts.

While Paul had the advantage in the ring, it's a safe bet that the five of them would fare pretty well against him on the football field.