False advertising
Nominative Determinism proved wrong!
Maybe he's an overachiever.
Side note - he kinda was. I grew up in Auckland and as a junior played tennis against his club (but a couple of years after he gave it away). He was, apparently, a very talented junior but decided to focus on running. Good decision as it turns out.
There was a sub for that on reddit that I used to like. It's amazing how many cases of it there are.