| 5. Ronde | 10.10.2020 | Bolton Wanderers | - | Grimsby Town | 0:0 | ||||
| 3. Ronde | 13.10.2020 | Cheltenham Town | - | Grimsby Town | 1:3 |  |
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| 6. Ronde | 17.10.2020 | Leyton Orient | - | Grimsby Town | 2:3 | ||||
| 8. Ronde | 24.10.2020 | Grimsby Town | - | Carlisle United | 1:1 | ||||
| 9. Ronde | 27.10.2020 | Forest Green Rovers | - | Grimsby Town | 1:0 | ||||
| 10. Ronde | 31.10.2020 | Stevenage FC | - | Grimsby Town | 0:0 | ||||
| 11. Ronde | 03.11.2020 | Grimsby Town | - | Barrow AFC | 1:0 | ||||
| 13. Ronde | 21.11.2020 | Tranmere Rovers | - | Grimsby Town | 5:0 | ||||
| 16. Ronde | 05.12.2020 | Colchester United | - | Grimsby Town | 2:1 | ||||
| 12. Ronde | 08.12.2020 | Grimsby Town | - | Newport County | 0:2 | ||||
| 17. Ronde | 12.12.2020 | Grimsby Town | - | Mansfield Town | 1:1 | ||||
| 18. Ronde | 15.12.2020 | Southend United | - | Grimsby Town | 3:1 |
Engeland