There are plenty of late bloomer professional athletes. Bernard Hopkins learned boxing at age 17. Randy Couture didn't take up MMA until age 33. Ken Norton didn't take up boxing until age 20. Hakeem Olajuwon didn't take up basketball until age 15. There are plenty of lesser known players like Yvon Joseph who did not take up basketball until age 22 and later made it to the NBA (there are only about 3100 NBA players in history).
And there is this guy who took up golf at age 31 and is trying to become a pro golfer:
I'll just leave this here.
https://en.wikipedia.org/wiki/Ye_Jiangchuan
I feel like this may have been ignored, so I'm quoting it.
Recap: Guy learns chess at 17, becomes top 25 player in the world.