1.Muhammad Ali & Laila Ali (both boxers)
2.Ken Griffey Sr. & Ken Griffey Jr.(.1st father son to play on same team in baseball on the mariners)
3.Mark McGwire & Matthew McGwire (Matt was cardinals batboy)
4.Nate Williams & Natalie Williams (Nate played in NBA and Natalie played in WNBA)
5.Calvin Hill & Grant Hill (Calvin played in NFL and Grant played in NBA)
6.Bobby Hull & Brett Hull (Both played Hockey)
Bobby Hull & Brett Hull