American League (Major)

National League (Major)

International League (AAA)

Pacific Coast League (AAA)

Eastern League (AA)

Southern League (AA)

Texas League (AA)

California League (High A)

Carolina League (High A)

Florida State League (High A)

Midwest League (A)

South Atlantic League (A)

NY-Penn League (Short-A)

Northwest League (Short-A)

Appalachian League (Rookie)

Pioneer League (Rookie)

Independent Teams

Defunct Teams