In a given year there can be 65+ teams, though not all of them are "full-time" teams (they only race partial season races)
A Nascar owner can have a maximum of four teams. Each team has one driver.
A Nascar Sprint Cup team can have anywhere from 1 car up to a maximum of 4 cars.
Depends on how many cars the team has, but one driver per team.
The Negro leagues was a league for African- American players back in the 1940's, since they were not treated well, they played seperate from the whites, and got less pay to play more games. but...