| ERA* Wins Losses Saves Games Games Started Complete Games Shutouts Innings Pitched Hits Allowed Homeruns Allowed Strikeouts Walks Allowed |
| Montreal ERA* - Single Season Leaders |
| Rank | Player | Year | Value |
| 1 | Babe Adams | 2017 | 3.060 |
| 2 | Bobby Shantz | 2016 | 3.780 |
| 3 | Bill Donovan | 2017 | 4.020 |
| 4 | Slim Sallee | 2016 | 4.040 |
| 5 | Murry Dickson | 2017 | 4.050 |