<100 ranked player per city?

Since we are going through fun stats :slight_smile:

I was reading this article http://wesa.fm/post/pittsburghs-pinball-scene-flipping-awesome

and I saw the quote:

Pittsburgh is home to nine of the top 100 players ranked by the International Flipper Pinball Association. Next in line is New York City, which hosts eight players.

How did they come up with that? I am curious to see who play under which banner, you would think Chicago would be up there no? :slight_smile: