| 1. Round | 12/09/2020 | Wycombe Wanderers | - | Rotherham United | 0:1 | ||||
| 5. Round | 17/10/2020 | Rotherham United | - | Norwich City | 1:2 | ||||
| 24. Round | 16/01/2021 | Derby County | - | Rotherham United | 0:1 | ||||
| 25. Round | 19/01/2021 | Rotherham United | - | Stoke City | 3:3 | ||||
| 21. Round | 27/01/2021 | Middlesbrough FC | - | Rotherham United | 0:3 | ||||
| 27. Round | 30/01/2021 | Rotherham United | - | Swansea City | 1:3 | ||||
| 20. Round | 03/02/2021 | Rotherham United | - | Derby County | 3:0 | ||||
| 28. Round | 06/02/2021 | Preston North End | - | Rotherham United | 1:2 | ||||
| 23. Round | 09/02/2021 | Rotherham United | - | Cardiff City | 1:2 | ||||
| 30. Round | 17/02/2021 | AFC Bournemouth | - | Rotherham United | 1:0 | ||||
| 31. Round | 20/02/2021 | Norwich City | - | Rotherham United | 1:0 | ||||
| 32. Round | 23/02/2021 | Rotherham United | - | Nottingham Forest | 0:1 | ||||
| 33. Round | 27/02/2021 | Rotherham United | - | Reading FC | 0:1 | ||||
| 29. Round | 13/04/2021 | Rotherham United | - | Queens Park Rangers | 3:1 | ||||
| 36. Round | 15/04/2021 | Rotherham United | - | Coventry City | 0:1 | ||||
| 42. Round | 18/04/2021 | Rotherham United | - | Birmingham City | 0:1 |
Scotland