| FA Cup | 25/01/20 | Millwall FC | - | Sheffield United | 0:2 | ||||
| Championship | 26/02/22 | Millwall FC | - | Sheffield United | 1:0 | ||||
| Championship | 06/08/22 | Sheffield United | - | Millwall FC | 2:0 | ||||
| Championship | 08/04/25 | Sheffield United | - | Millwall FC | 0:1 |
| FA Cup | 25/01/20 | Millwall FC | - | Sheffield United | 0:2 | ||||
| Championship | 26/02/22 | Millwall FC | - | Sheffield United | 1:0 | ||||
| Championship | 06/08/22 | Sheffield United | - | Millwall FC | 2:0 | ||||
| Championship | 08/04/25 | Sheffield United | - | Millwall FC | 0:1 |
| Billy James Mitchell | |
| Born: | 07.04.2001 |
| Place of birth: |
Orpington, London, 
England |
| Nationality: |
England
|
| Height: | 178 cm |
| Weight: | 71 kg |
| Position(s): | Defensive Midfielder Central Midfielder |
| Foot: | right |