What do soccer and basketball have in common?

The sports of American football, world football, Basketball and Baseball all have these in common:

1. a ball is used for play;

2. each sport has umpires or referees;

3. each sport is a spectator sport, they have millions of fans;

4. each sport is played with a so-called field of play, baseball stadiums however, can have different dimensions for home runs and ground rule doubles;

5. each sport draws in millions of dollars from fans and sports media; and

6. each sport generally pays players huge amounts of money, with the exception of players in college.