The Shamrock family
And of corse the gracie Clan
This is pretty much a joke thread XDD how do u not include them
The Gracie family does not really have many 'athletic' members. Jon Jones is a top P4P MMA champion, 1 brother is a professional football player and the other is about to become one, too. That is out of a much smaller family core.
Out of the huge extended Gracie clan, who has done anything outside of MMA/BJJ? Even Rickson, who is probably in the best condition of them all, has never done anything of note elsewhere in sport.
The Shamrock 'brothers' were both champions in combat sports but not anywhere else (I was a huge fan of them both when they were competing).
Nick and Nate both compete in triathlons (I hear about Nick doing so often, but not so much Nate) which requires a high degree of fitness. I just don't think either of them would be very good at a 'game' style sport like baseball or football. Maybe soccer since they have good cardio.