Actually, the most convincing argument I’ve ever heard for why a certain race excels at sports was in a sociology class.
As much as the OP considers the idea ‘that blacks simply “go out for sports” more as a way to “escape their circumstances”’ is ‘horseshit’, in fact, it’s a very good explanation. Sports, much more than any other field, is very performance dominated. Can you tell me which of two batters is better? Sure, you look at their ERA and slugging average and contact average. Can you tell me which of two accountants is better? Much more subjective, especially in areas of fine delimination.
Therefore, minorities see sports as a much easier way of gaining distinction. Add to this how cheap it is to get involved in sports when compared to the college education you’d need for other fields (hey, $1000 for equipment, good shoes, and a gym pass pales in comparison to $5000 a year just for a state college) and how people in sports are obvious achievers (name how much a top accountant can make over 5 years. Now tell me how much Ken Griffey Jr. made in his deal with the Reds. Note the difference in numbers? Note how much easier it is for most people to know how much Griffey made than how much a good accountant makes?).
The results were best proven to me, though, by the example they used of Heavyweight Boxing title contenders. If you go back through the list of champs, it’s amazing the gentrification and strati. Late in the 19th century, nearly every name is Irish- John L. Sullivan, a few O’Malleys, etc. Then, in the early 20th Century, you have- hold on to your hats- Jewish domination of the sport, such as Max Baer. Do we think of Jews as being ‘bred for sport’? But there they are, dominating the title bouts for a good fifteen to twenty years. Next came the Poles, and then Italians, and eventually blacks. Now it’s starting to turn heavily Hispanic.
Maybe there’s some genetic differences; but all in all, it’s sociological and economic. After each minority rose in sports (and crime, also an endeavor which doesn’t discriminate much and doesn’t require a lot of money to start out in), they also began to make headway into ‘regular’ society- the Irish hegemony of boxing comes just before the Irish began getting included (and in many cases taking over) big city political machines, likewise for Jews, Italians, etc.
It’s a standard cycle. While I expect that Asians may have avoided it to some extent due to American bias tending to be in their favor (all those guys are smart geeks, after all), it wouldn’t surprise me if in forty years we see this same thread asking, “Are the Vietnamese genetically different enough to explain their domination in sports?”