Minor League Baseball compete at levels below Major League Baseball.
 Johnson, 19791988Sal Artiaga, 19881991Mike Moore, 19922007Pat O'Conner, 20072020== Independent baseball ==Independent leagues are those professional leagues in the United States and Canada not under the purview of organized Minor League Baseball and the Commissioner of Baseball
The Class B Carolina League and Northwest League, the Class C California League, Pioneer League and Northern League, and the Class D Florida State League, GeorgiaFlorida League, Midwest League, New YorkPenn League, and Western Carolinas League were all designated Class A leagues

