| 28. Jornada | 06.02.2021 | Newport County | - | Grimsby Town | 1:0 | ||||
| 31. Jornada | 23.02.2021 | Grimsby Town | - | Crawley Town | 2:1 |  |
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| 32. Jornada | 27.02.2021 | Harrogate Town | - | Grimsby Town | 1:0 | ||||
| 33. Jornada | 02.03.2021 | Grimsby Town | - | Leyton Orient | 0:1 | ||||
| 36. Jornada | 13.03.2021 | Grimsby Town | - | Colchester United | 0:0 | ||||
| 37. Jornada | 20.03.2021 | Mansfield Town | - | Grimsby Town | 2:2 |
Gales