| RK | SEASON | PLAYER | FRANCHISE | IP | W | SV | ER | HW | K | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 2013 | MARCO ESTRADA | Down East Wood Ducks | 104.0 | 5 | 0 | 50 | 121 | 97 | 4.33 | 1.16 |
| 2. | 2014 | MARCO ESTRADA | Down East Wood Ducks | 89.7 | 6 | 0 | 52 | 115 | 81 | 5.22 | 1.28 |
| 3. | 2014 | MARCO ESTRADA | Colorado Wookiees | 61.0 | 1 | 0 | 21 | 66 | 46 | 3.10 | 1.08 |
| 4. | 2013 | ROY HALLADAY | Cambridge Crunch | 34.3 | 2 | 0 | 33 | 50 | 35 | 8.65 | 1.46 |
| 5. | 2013 | LUIS AYALA | Virginia Hat Lineup | 0.3 | 0 | 0 | 1 | 3 | 1 | 27.03 | 9.01 |
| 6. | 2013 | WILTON LOPEZ | Carolina Thunderdogs | 5.3 | 0 | 0 | 6 | 13 | 4 | 10.13 | 2.44 |