Bump for @Stewo, do you agree?
High school kids in the US playing football:
1,085,272 ( http://www.cnsnews.com/news/article...72-players-football-remains-no-1-hs-sport-usa )
High school kids in the US playing basketball:
~236,000 ( https://www.usnews.com/education/bl...articipation-increases-for-22nd-straight-year )
Some simple statistics to illustrate my point.