Replying to Best Athletes in the world

ok here is my question, what group are really the best? we can all make a case for skiing but I want an open conversation, part of the reason i call skiing and most action sports the best is because it takes allot of balls to hit what we hit and trick off it. plus the agility and stamina to be active at 12,000ft. and over all coordination of pro skiers is plane ridicules.

so lets here some suggestions and dont just say football, I want reasons