Slone, there are NO obvious physiological differences between so-called races of people. I challenge anyone on this forum to produce any scientific evidence whatsover to support this view. It's one thing to classify a group of people on the basis of some minor inherited characteristic (e.g., skin color). It's quite another to credit them with some genetic advantage or disadvantage based on that classification. Within the human species there is no legitimate biological reason to classify anyone on the basis of so-called "race". This is the standard scientific view. And, yes, it IS racism to make the false claim that one national group has superior genetics to excel in a particular sport. There should be no tolerance for racism on this forum!