| Yellow | Clubs | VS Club | Date | |
|---|---|---|---|---|
| 4 | Nottingham Forest | Huddersfield Town | 25-09-2020 | Match details |
| 4 | Barnsley | Reading | 19-09-2020 | Match details |
| 4 | Birmingham City | Brentford | 12-09-2020 | Match details |
| 3 | Blackburn Rovers | Derby County | 26-09-2020 | Match details |
| 3 | Stoke City | Preston North End | 26-09-2020 | Match details |
| 3 | Barnsley | Coventry City | 26-09-2020 | Match details |
| 3 | Millwall | Brentford | 26-09-2020 | Match details |
| 3 | Derby County | Reading | 12-09-2020 | Match details |
| 3 | Norwich City | Huddersfield Town | 12-09-2020 | Match details |
| 3 | Luton Town | Barnsley | 12-09-2020 | Match details |
