Your statements above are utterly bizarre whether you understand that fact or not. Chinese musicians are becoming increasingly prominent in the world of classical music--and they are doing so at the expense of musicians of European ancestry. Is that because Chinese musicians are somehow genetically superior to musicians of European descent? Or is it because of social factors, including the massive investment in music conservatories made by the Chinese government, investments that come in the wake of reciprocal cutbacks to support for the performing arts in the U.S and Europe?. I'd say its the latter not the former. In the case of baseball, you immediately assume that the disproportionate success of blacks in the major leagues following the end of segregation must be explained by an argument based on racial determinism. Such an assumption reveals the reductiveness of your thinking on this issue since you never bother to consider how social factors such as segregation impacted black economic prospects, particularly by rendering professional baseball as a more appealing career pursuit for blacks than it was for most whites.

I should also note that you scoff at the idea that the arbitrary exclusion of 10% of a population from a competition could possibly call into question the results of that competition. Could you imagine what your response would be if 10% of eligible voters--all Trump supporters--were arbitrarily prevented from voting in the next presidential election?