| 1 | Sat 29 Aug 2020 | 40-4 v Preston North EndPreston North End 4-0 Mansfield Town | Carabao Cup First Round |
| 2 | Sat 19 Sep 2020 | 42-2 v Leyton OrientLeyton Orient 2-2 Mansfield Town | Sky Bet League Two |
| 3 | Sat 26 Sep 2020 | 41-2 v Exeter CityMansfield Town 1-2 Exeter City | Sky Bet League Two |
| 4 | Sat 3 Oct 2020 | 41-2 v Newport CountyNewport County 2-1 Mansfield Town | Sky Bet League Two |
| 5 | Tue 6 Oct 2020 | 41-3 v Lincoln CityMansfield Town 1-3 Lincoln City | Papa John’s Trophy Group 8 |
| 6 | Sat 10 Oct 2020 | 40-0 v StevenageMansfield Town 0-0 Stevenage | Sky Bet League Two |
| 7 | Sat 17 Oct 2020 | 41-3 v Bradford CityMansfield Town 1-3 Bradford City | Sky Bet League Two |
| 8 | Tue 20 Oct 2020 | 41-1 v MorecambeMorecambe 1-1 Mansfield Town | Sky Bet League Two |
| 9 | Sat 24 Oct 2020 | 4 0-0 v Cheltenham TownCheltenham Town 0-0 Mansfield Town | Sky Bet League Two |
| 10 | Tue 27 Oct 2020 | 42-4 v BarrowMansfield Town 2-4 Barrow | Sky Bet League Two |
| 11 | Tue 10 Nov 2020 | 42-1 v Scunthorpe UnitedScunthorpe United 1-2 Mansfield Town | Papa John’s Trophy Group 9 |
| 12 | Wed 2 Dec 2020 | 4 1-0 v Cambridge UnitedCambridge United 0-1 Mansfield Town | Sky Bet League Two |
| 13 | Sat 23 Jan 2021 | 260-3 v Scunthorpe UnitedScunthorpe United 3-0 Grimsby Town | Sky Bet League Two |
| 14 | Sat 30 Jan 2021 | 261-2 v StevenageGrimsby Town 1-2 Stevenage | Sky Bet League Two |
| 15 | Sat 6 Feb 2021 | 260-1 v Newport CountyNewport County 1-0 Grimsby Town | Sky Bet League Two |
| 16 | Tue 23 Feb 2021 | 262-1 v Crawley TownGrimsby Town 2-1 Crawley Town | Sky Bet League Two |
| 17 | Sat 27 Feb 2021 | 260-1 v Harrogate TownHarrogate Town 1-0 Grimsby Town | Sky Bet League Two |
| 18 | Tue 2 Mar 2021 | 260-1 v Leyton OrientGrimsby Town 0-1 Leyton Orient | Sky Bet League Two |
| 19 | Sat 6 Mar 2021 | 261-2 v Forest Green RoversGrimsby Town 1-2 Forest Green Rovers | Sky Bet League Two |
| 20 | Tue 9 Mar 2021 | 261-1 v Carlisle UnitedCarlisle United 1-1 Grimsby Town | Sky Bet League Two |
| 21 | Sat 13 Mar 2021 | 260-0 v Colchester UnitedGrimsby Town 0-0 Colchester United | Sky Bet League Two |
| 22 | Wed 17 Mar 2021 | 260-0 v Tranmere RoversGrimsby Town 0-0 Tranmere Rovers | Sky Bet League Two |
| 23 | Tue 23 Mar 2021 | 261-0 v BarrowBarrow 0-1 Grimsby Town | Sky Bet League Two |
| 24 | Sat 27 Mar 2021 | 261-1 v WalsallGrimsby Town 1-1 Walsall | Sky Bet League Two |
| 25 | Fri 2 Apr 2021 | 261-1 v Salford CitySalford City 1-1 Grimsby Town | Sky Bet League Two |
| 26 | Mon 5 Apr 2021 | 261-1 v Cheltenham TownGrimsby Town 1-1 Cheltenham Town | Sky Bet League Two |
| 27 | Sat 10 Apr 2021 | 260-1 v Bradford CityBradford City 1-0 Grimsby Town | Sky Bet League Two |
| 28 | Sat 17 Apr 2021 | 262-1 v Bolton WanderersGrimsby Town 2-1 Bolton Wanderers | Sky Bet League Two |
| 29 | Tue 20 Apr 2021 | 260-3 v MorecambeGrimsby Town 0-3 Morecambe | Sky Bet League Two |
| 30 | Sat 24 Apr 2021 | 26 2-1 v Oldham AthleticOldham Athletic 1-2 Grimsby Town | Sky Bet League Two |
| 31 | Tue 27 Apr 2021 | 26 2-3 v Exeter CityExeter City 3-2 Grimsby Town | Sky Bet League Two |
| 32 | Sat 1 May 2021 | 261-0 v Port ValeGrimsby Town 1-0 Port Vale | Sky Bet League Two |
| 33 | Sat 8 May 2021 | 260-3 v Cambridge UnitedCambridge United 3-0 Grimsby Town | Sky Bet League Two |
| 34 | Tue 10 Aug 2021 | 240-0 v Doncaster RoversWalsall 0-0 Doncaster Rovers | Carabao Cup First Round |
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