| Yellow | VS Club | Date | |
|---|---|---|---|
| 6 | Crewe Alexandra | 16-01-2021 | Match details |
| 5 | Sunderland | 01-05-2021 | Match details |
| 4 | Ipswich Town | 05-12-2020 | Match details |
| 4 | Fleetwood Town | 21-11-2020 | Match details |
| 3 | Burton Albion | 17-04-2021 | Match details |
| 3 | Bristol Rovers | 20-03-2021 | Match details |
