There are too many to count. There are dozens and dozens of basketball leagues, a few American football leagues, soccer leagues, many baseball leagues, and so on. There is no kept count of professional athletes.
2
the league in the football is 35
Brazil
10,000
1
360 football clubs in 16 leagues
1
33
Association of Professional Football Leagues was created in 1946.
Association of Professional Football Leagues ended in 1948.
European Professional Football Leagues's motto is 'Great Football makes Great Things'.