| American League | W | L |
| Skull Island Predators | 3 | 2 |
| Selkirk Steelers | 2 | 3 |
| National League | W | L |
| Madison Muskrats | 3 | 2 |
| Wallowa Cougars | 2 | 3 |
2018 RPBL League Championship Series
| American League | W | L |
| Quebec Nordiques | 4 | 3 |
| Skull Island | 3 | 4 |
| National League | W | L |
| Beaumont Posse | 4 | 1 |
| Madison Muskrats | 1 | 4 |
2018 RPBL World Series
| American League | W | L |
| Quebec Nordiques | 1 | 4 |
| National League | W | L |
| Beaumont Posse | 4 | 1 |