Did you mean: National Association of Professional Baseball Players
National Association of Professional Base Ball Players
Sports league
The National Association of Professional Base Ball Players, often known simply as the National Association, was the first fully-professional sports league in baseball. The NA was founded in 1871 and continued through the 1875 season. Wikipedia
Founded: March 17, 1871
No. of teams: 1871–1875: 9, 11, 9, 8, 13
Sport: Baseball