| Yellow | Clubs | VS Club | Date | |
|---|---|---|---|---|
| 6 | Queens Park Rangers | Norwich City | 29-12-2020 | Match details |
| 6 | Blackburn Rovers | Brentford | 05-12-2020 | Match details |
| 6 | Middlesbrough | Barnsley | 03-10-2020 | Match details |
| 5 | Queens Park Rangers | Brentford | 17-02-2021 | Match details |
| 5 | Swansea City | Brentford | 27-01-2021 | Match details |
| 5 | Cardiff City | Norwich City | 16-01-2021 | Match details |
| 5 | Birmingham City | Reading | 09-12-2020 | Match details |
| 5 | Derby County | Millwall | 05-12-2020 | Match details |
| 5 | Rotherham United | Brentford | 01-12-2020 | Match details |
| 5 | Swansea City | Norwich City | 07-11-2020 | Match details |
