With respect, when I played pool in a league, that was NAPA. They have an Elo-based system of ranking players, on a nominal 1-100 basis. You can’t go below 1, but you can go above 100 if you’re really good. I’ve seen some 100+ players. They were truly amazing.
However, my best rank was 12. That’s twelve, in case you misunderstand the numbers. I was literally the worst player in the entire league.
I don’t think that there’s anyone out there who is much worse than I am.