Feinting, flinching, reacting preemptively, Floyd Mayweather Sr. who is Father of the greatest boxer of all time, Floyd Mayweather Jr. here teaching the Philly Shell or Shoulder Roll to his much younger student. As he does, he's just playing around, schooling his opponent with technique. This is an educational breakdown of the sequence Floyd Mayweather Sr. defends against a boxer, then playfully schools him, punches him back. Thank you for joining me as we take a closer glance. Truly, the art Floyd Mayweather Jr. used to defeat Manny Pacquiao...