| 1 | Mon 24 Aug 2020 | 51-1 v Hashtag UnitedGrays Athletic 1-1 Hashtag United | Friendly |
| 2 | Wed 2 Sep 2020 | 40-6 v Billericay TownGrays Athletic 0-6 Billericay Town | Friendly |
| 3 | Sat 5 Sep 2020 | 61-1 v TilburyGrays Athletic 1-1 Tilbury | Friendly |
| 4 | Sat 12 Sep 2020 | 5 1-0 v Witham TownGrays Athletic 1-0 Witham Town | Emirates FA Cup Preliminary Round |
| 5 | Sat 12 Sep 2020 | 32-3 v East Grinstead TownEast Grinstead Town 3-2 Phoenix Sports | Emirates FA Cup Preliminary Round |
| 6 | Sat 19 Sep 2020 | 5 2-0 v Brentwood TownBrentwood Town 0-2 Grays Athletic | Isthmian League - North Division |
| 7 | Sat 19 Sep 2020 | 32-1 v Ashford UnitedAshford United 1-2 Phoenix Sports | Isthmian League - South East Division |
| 8 | Wed 23 Sep 2020 | 53-1 v Potton UnitedGrays Athletic 3-1 Potton United | Emirates FA Cup First Qualifying Round |
| 9 | Sat 26 Sep 2020 | 50-4 v Canvey IslandGrays Athletic 0-4 Canvey Island | Isthmian League - North Division |
| 10 | Sat 3 Oct 2020 | 34-0 v Hythe TownHythe Town 0-4 Phoenix Sports | Isthmian League - South East Division |
| 11 | Tue 6 Oct 2020 | 30-2 v Burgess Hill TownBurgess Hill Town 2-0 Phoenix Sports | Isthmian League - South East Division |
| 12 | Sat 10 Oct 2020 | 30-2 v WhitehawkPhoenix Sports 0-2 Whitehawk | Isthmian League - South East Division |
| 13 | Sat 17 Oct 2020 | 30-2 v MarlowPhoenix Sports 0-2 Marlow | Buildbase FA Trophy Second Qualifying Round |
| 14 | Sat 24 Oct 2020 | 30-6 v Three BridgesThree Bridges 6-0 Phoenix Sports | Isthmian League - South East Division |
| 15 | Sat 24 Oct 2020 | 50-1 v Soham Town RangersSoham Town Rangers 1-0 Grays Athletic | Isthmian League - North Division |
| 16 | Tue 27 Oct 2020 | 31-2 v East Grinstead TownPhoenix Sports 1-2 East Grinstead Town | Isthmian League - South East Division |
| 17 | Wed 28 Oct 2020 | 5 1-0 v Great Wakering RoversGrays Athletic 1-0 Great Wakering Rovers | Isthmian League - North Division |
| 18 | Sat 5 Dec 2020 | 200-3 v HornchurchHornchurch 3-0 Grays Athletic | Friendly |
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