| PL-P | # | BOP | BRP | BUP | CHP | CLP | NYP | PHP | PIP | PL-P | ||||||
| 1890 | 8 | Boston | Brooklyn | Buffalo | Chicago | Cleveland | New York | Philadelphia | Pittsburg | 1890 | ||||||
| Reds | Ward's Wonders | Bisons | Pirates | Infants | Giants | Athletics | Burghers | |||||||||
| to AA | to AA | |||||||||||||||
| Red Text | Change nickname to match actual | |||||||||||||||
| Boston | Reds | joined AA | ||||||||||||||
| Brooklyn | Ward's Wonders | merged with NL counterpart | ||||||||||||||
| New York | Giants | merged with NL counterpart | ||||||||||||||
| Chicago | Pirates | merged with NL counterpart | ||||||||||||||
| Philadelphia | Athletics | joined AA | ||||||||||||||
| Pittsburgh | Burghers | merged with NL counterpart | ||||||||||||||
| Cleveland | Infants | disbanded | ||||||||||||||
| Buffalo | Bisons | disbanded | ||||||||||||||