SM
| Venue: Oakwell Stadium |
Barnsley | ||
| G | 13 | Nick Townsend |
| CD-L | 6 | Liam Lindsay S  |
| CD-R | 18 | Adam Jackson |
| LB | 23 | Daniel Pinillos |
| RB | 17 | Andy Yiadom |
| CM | 22 | Gary Gardner |
| LM | 20 | Brad Potts S |
| RM | 14 | Stephen Mallan S |
| F | 19 | Kieffer Moore |
| LF | 15 | Oliver McBurnie |
| RF | 26 | Mamadou Thiam |
| Sub | 11 | Lloyd Isgrove |
| Sub | 9 | Tom Bradshaw |
| Sub | 10 | George Moncur |
| Sub | 24 | Matthew Pearson |
| Sub | 12 | Dimitri Cavaré |
| Sub | 21 | Connor Mahoney |
| Sub | 30 | Jack Walton |
Millwall | ||
| G | 1 | Jordan Archer |
| CD-L | 35 | 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 | 44 | Ben Marshall S |
| RM | 14 | Jed Wallace |
| CF-L | 9 | Lee Gregory S |
| CF-R | 20 | Steve Morison S |
| Sub | 10 | Fred Onyedinma |
| Sub | 24 | Jason Shackell |
| Sub | 7 | Tim Cahill |
| Sub | 19 | Tom Elliott |
| Sub | 18 | Ryan Tunnicliffe |
| Sub | 22 | Aiden O'Brien |
| Sub | 16 | David Martin |
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