| 1 | Sat 2 Aug | 13-0 v Crawley TownGrimsby Town 3-0 Crawley Town | Sky Bet League Two |
| 2 | Sat 9 Aug | 13-3 v Harrogate TownHarrogate Town 3-3 Grimsby Town | Sky Bet League Two |
| 3 | Tue 12 Aug | 13-1 v Shrewsbury TownGrimsby Town 3-1 Shrewsbury Town | Carabao Cup First Round |
| 4 | Sat 16 Aug | 12-1 v Newport CountyGrimsby Town 2-1 Newport County | Sky Bet League Two |
| 5 | Tue 19 Aug | 11-0 v WalsallWalsall 0-1 Grimsby Town | Sky Bet League Two |
| 6 | Sat 23 Aug | 11-1 v Accrington StanleyAccrington Stanley 1-1 Grimsby Town | Sky Bet League Two |
| 7 | Wed 27 Aug | 12-2 v Manchester UnitedGrimsby Town 2-2 Manchester United | Carabao Cup Second Round |
| 8 | Sat 30 Aug | 10-1 v Bristol RoversGrimsby Town 0-1 Bristol Rovers | Sky Bet League Two |
| 9 | Sat 6 Sep | 13-2 v Milton Keynes DonsMilton Keynes Dons 2-3 Grimsby Town | Sky Bet League Two |
| 10 | Sat 13 Sep | 11-1 v Cambridge UnitedGrimsby Town 1-1 Cambridge United | Sky Bet League Two |
| 11 | Tue 16 Sep | 11-0 v Sheffield WednesdaySheffield Wednesday 0-1 Grimsby Town | Carabao Cup Third Round |
| 12 | Sat 20 Sep | 10-3 v BarnetBarnet 3-0 Grimsby Town | Sky Bet League Two |
| 13 | Sat 27 Sep | 17-1 v Cheltenham TownGrimsby Town 7-1 Cheltenham Town | Sky Bet League Two |
| 14 | Sat 4 Oct | 12-0 v Salford CitySalford City 0-2 Grimsby Town | Sky Bet League Two |
| 15 | Sat 11 Oct | 11-2 v Colchester UnitedGrimsby Town 1-2 Colchester United | Sky Bet League Two |
| 16 | Sat 18 Oct | 11-0 v GillinghamGrimsby Town 1-0 Gillingham | Sky Bet League Two |
| 17 | Sat 25 Oct | 12-3 v Crewe AlexandraCrewe Alexandra 3-2 Grimsby Town | Sky Bet League Two |
| 18 | Tue 28 Oct | 10-5 v BrentfordGrimsby Town 0-5 Brentford | Carabao Cup Fourth Round |
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