| Yellow | VS Club | Date | |
|---|---|---|---|
| 5 | Mansfield Town | 02-01-2021 | Match details |
| 4 | Colchester United | 20-03-2021 | Match details |
| 3 | Grimsby Town | 01-05-2021 | Match details |
| 3 | Barrow | 20-04-2021 | Match details |
| 3 | Morecambe | 10-04-2021 | Match details |
| 3 | Oldham Athletic | 09-03-2021 | Match details |
| 3 | Scunthorpe United | 26-01-2021 | Match details |
