| 2020-09-01 19:30:2201/09/20 | Newcastle Benfield v Seaham Red Star | 1 - 1 | | 2020-21 | Sam Smith's Park | FA CupExtra Preliminary Round Qualifying | 176 |
| Lewis Scorgie (46) |
| Jason Blackburn (48), Jack Cooper sent off (88) |
| 2020-09-05 15:00:0005/09/20 | Seaham Red Star v Whickham | 0 - 0 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 128 |
| 2020-09-09 19:30:0009/09/20 | Northallerton Town v Seaham Red Star | 0 - 0 | Division 1 | 2020-21 | The Calvert Stadium | | 131 |
| John Howard sent off (25) Andrew Shepherd sent off (40) |
| Mark Waite sent off (25) |
| 2020-09-12 15:00:0012/09/20 | Seaham Red Star v North Shields | 1 - 3 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 152 |
| Luke Sullivan (82 pen) |
| Dan Wilson 3 (44, 67, 77) |
| 2020-09-15 19:30:0015/09/20 | Seaham Red Star v Consett | 2 - 6 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 144 |
| Andrew Johnson (28) Daniel Hawkins (78) |
| Simon Jakab (8) Ross Wilkinson (15) Calvin Smith (51) Jake Orrell (53) Darren Holden (63) Matthew Cornish (79) |
| 2020-09-19 15:00:0019/09/20 | Seaham Red Star v Hebburn Town | 0 - 4 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 209 |
| Thomas Potter 2 (26, 73) Amar Purewal (68) Lewis Suddick (78) |
| 2020-09-26 15:00:0026/09/20 | Bishop Auckland v Seaham Red Star | 0 - 2 | Division 1 | 2020-21 | Heritage Park | | 143 |
| Andrew Johnson (49) Nathan Greenwood (56) |
| 2020-09-29 19:30:0029/09/20 | Shildon v Seaham Red Star | 5 - 3 | Division 1 | 2020-21 | Dean Street | | 150 |
| Alexander White (20) Joe Posthill (48) Daniel Craggs (59 pen) Jack Vaulks (67) Dean Thexton (75) |
| Thomas Bott (17) Nathan Greenwood (23) Paul Gardiner (78) |
| 2020-10-03 15:00:0003/10/20 | Seaham Red Star v Newton Aycliffe | 0 - 3 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 109 |
| Liam Jarvis (33) Connor Phelan (49) Adam Burnicle (70 pen) |
| 2020-10-10 15:00:2910/10/20 | Garforth Town v Seaham Red Star | 1 - 1 | | 2020-21 | | FA VaseSecond Qualifying Round | 238 |
| Andrew Johnson (55 pen), Thomas Bott sent off (37) |
| 2020-10-17 15:00:0017/10/20 | Seaham Red Star v Thornaby | 1 - 2 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 150 |
| Lewis Suddick (60) |
| Bobby Pye (5) Elliott Bedden (25), Austin Johnston sent off (65) |
| 2020-10-24 15:00:0024/10/20 | Seaham Red Star v West Auckland Town | 0 - 1 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 123 |
| Sean McRoberts sent off (44) |
| Adam Wrightson (52) |
| 2020-10-28 19:45:0028/10/20 | Stockton Town v Seaham Red Star | 7 - 1 | Division 1 | 2020-21 | The Map Group UK Stadium | | 150 |
| Jordan Robinson (17) Dale Mulligan (22) Tom Portas (28) Michael Roberts 2 (43, 90) Shane Henry (45) Nathan Mulligan (80) |
| Joe Hailes (83) |
| 2020-10-31 15:00:5631/10/20 | Irlam v Seaham Red Star | 0 - 2 | | 2020-21 | | FA VaseFirst Round | 127 |
| Thomas Lawson (45 +2) Taylor Richardson (48) |
| 2020-12-19 15:00:0019/12/20 | Barnton v Seaham Red Star | 0 - 4 | | 2020-21 | | FA VaseSecond Round | 247 |
| Andrew Johnson 2 (20, 64) Paul Gardiner (46) Thomas Bott (76) |
| 2020-12-22 19:30:0022/12/20 | Sunderland Ryhope C.W. v Seaham Red Star (at Seaham Red Star) | 5 - 2 | | 2020-21 | The Ferguson Motor Repairs Stadium | Durham Challenge CupFirst Round | 104 |
| Bradley Hird (61), Bailey Judson (79), James Ellis (81), Robbie Bird (85), Kyle Davis (88) |
| Luke Sullivan 2 (75 pen, 90) |
| 2020-12-29 19:45:3729/12/20 | North Ferriby United v Seaham Red Star | 2 - 2 | | 2020-21 | The Dransfield Stadium | FA VaseThird Round | 150 |
| Levi Tatbottom (66), Laurence McKay (72 pen) |
| Luke Sullivan (20 pen), Andrew Johnson (30) |
| 2021-04-10 15:00:3710/04/21 | North Ferriby United v Seaham Red Star | 1 - 0 | | 2020-21 | The Dransfield Stadium | FA VaseThird Round | |
| Joel Shortland (87) |
