SM
| Venue: The New Den |
Millwall | ||
| G | 1 | Jordan Archer |
| CD-L | 5 | Jake Cooper |
| CD-R | 4 | Shaun Hutchinson |
| LB | 3 | James Meredith |
| RB | 12 | Mahlon Romeo |
| CM-L | 23 | George Saville |
| CM-R | 6 | Shaun Williams |
| LM | 22 | Aiden O'Brien S  |
| RM | 7 | Jed Wallace |
| CF-L | 20 | Steve Morison S |
| CF-R | 9 | Lee Gregory S |
| Sub | 26 | Jiri Skalak |
| Sub | 25 | Murray Wallace |
| Sub | 19 | Tom Elliott |
| Sub | 13 | Ben Amos |
| Sub | 2 | Conor McLaughlin |
| Sub | 18 | Ryan Tunnicliffe |
| Sub | 10 | Fred Onyedinma |
Middlesbrough | ||
| G | 23 | Darren Randolph |
| CD-L | 20 | Dael Fry |
| CD-R | 24 | Aden Flint |
| LB | 3 | George Friend |
| RB | 5 | Ryan Shotton |
| CM | 7 | Grant Leadbitter S |
| LM | 16 | Jonathan Howson |
| RM | 8 | Adam Clayton S |
| F | 9 | Britt Assombalonga |
| LF | 10 | Martin Braithwaite |
| RF | 19 | Stewart Downing S |
| Sub | 26 | Lewis Wing |
| Sub | 28 | Marcus Tavernier |
| Sub | 18 | Ashley Fletcher |
| Sub | 21 | Marvin Johnson |
| Sub | 1 | Dimitrios Konstantopoulos |
| Sub | 27 | Harry Chapman |
| Sub | 25 | Nathan Wood-Gordon |
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