(Source: Hickock Sports.Com)
Note: Number next to team is total games played.
| 1871 | |||
|---|---|---|---|
| Boston Red Stockings | 30 | Chicago White Stockings | 28 |
| Cleveland Forest City | 29 | Ft. Wayne Kekiongas | 19 |
| New York Mutuals | 33 | Philadelphia Athletics | 28 |
| Rockford Forest City | 25 | Troy Haymakers | 28 |
| Washington Olympics | 30 | ||
| 1872 | |||
| Baltimore Lord Baltimores | 54 | Boston Red Stockings | 47 |
| Brooklyn Atlantics | 37 | Brooklyn Eckfords | 29 |
| Cleveland Forest City | 22 | Middletown CT Mansfields | 24 |
| New York Mutuals | 54 | Philadelphia Athletics | 44 |
| Troy Haymakers | 25 | Washington Nationals | 11 |
| Washington Olympics | 9 | ||
| 1873 | |||
| Baltimore Lord Baltimores | 56 | Baltimore Marylands | 6 |
| Boston Red Stockings | 59 | Brooklyn Atlantics | 54 |
| Elizabeth NJ Resolutes | 23 | New York Mutuals | 53 |
| Philadelphia Athletics | 51 | Philadelphia White Stockings | 53 |
| Washington Washingtons | 39 | ||
| 1874 | |||
| Baltimore Lord Baltimores | 47 | Boston Red Stockings | 70 |
| Brooklyn Atlantics | 55 | Chicago White Stockings | 59 |
| Hartford Dark Blues | 53 | New York Mutuals | 65 |
| Philadelphia Athletics | 55 | Philadelphia White Stockings | 58 |
| 1875 | |||
| Boston Red Stockings | 79 | Brooklyn Atlantics | 44 |
| Chicago White Stockings | 67 | Hartford Dark Blues | 82 |
| Keokuk IA Westerns | 13 | New Haven Elm City | 47 |
| New York Mutuals | 68 | Philadelphia Athletics | 73 |
| Philadelphia Centennials | 14 | Philadelphia White Stockings | 68 |
| St. Louis Red Stockings | 19 | St. Louis Brown Stockings | 68 |
| Washington Washingtons | 28 | ||
| Year | Champion | W | L | Pct. |
|---|---|---|---|---|
| 1871 | Philadelphia Athletics | 21 | 7 | .750 |
| 1872 | Boston Red Stockings | 39 | 8 | .830 |
| 1873 | Boston Red Stockings | 43 | 16 | .729 |
| 1874 | Boston Red Stockings | 52 | 18 | .743 |
| 1875 | Boston Red Stockings | 71 | 8 | .899 |