What a frick'n moron. My guess is that your knowledge of genetic economics (if there's even such a field--I'd guess you're pulling that one out of your backside too) is approximately equivalent to Paris Hilton's knowledge of quantum physics.
This, of course, explains the domination of white players in sports such as hockey, swimming, cycling, skiing, etc., and the large number of world class white players in soccer. (The widely considered best team in the world, Spain, is full of whiteys too.)
Now, if you'd like to float a theory about sociological determinants of racial concentration in certain sports, that might be worth considering, but your silly, stupid, ignorant racial breeding theory is pure crap.