| Runde | ⊝ Age | Teilnahmen |
|---|
| AFC Wimbledon | - | 27,1 | 5 |
| Accrington | Northern Group Stage | 27,4 | 10 |
| Arsenal U21 | Southern Group Stage | 19,8 | 6 |
| Aston Villa | Southern Group Stage | 22,2 | 4 |
| Barnsley | - | 25,5 | 4 |
| Barrow AFC | Northern Group Stage | 28,7 | 4 |
| Blackpool | - | 27,2 | 5 |
| Bolton W. | - | 26,3 | 4 |
| Bradford City | - | 28,4 | 11 |
| Brigton | Southern Group Stage | 22,6 | 6 |
| Bristol Rovers | - | 25,2 | 12 |
| Bromley FC | Southern Group Stage | 27,5 | 1 |
| Burton | Northern Group Stage | 25,8 | 9 |
| Cambridge | - | 27,7 | 5 |
| Cardiff City | - | 25,3 | 0 |
| Cheltenham | Southern Group Stage | 28,6 | 12 |
| Chesterfield | - | 27,7 | 10 |
| Colchester | - | 27,0 | 10 |
| Crawley Town | Southern Group Stage | 27,0 | 7 |
| Crewe | - | 25,1 | 12 |
| Crystal Palace | Southern Group Stage | 21,7 | 4 |
| Doncaster | - | 27,0 | 12 |
| Exeter City | - | 25,6 | 8 |
| FC Barnet | Southern Group Stage | 27,7 | 8 |
| FC Chelsea | Southern Group Stage | 19,6 | 6 |
| FC Everton | Northern Group Stage | 21,5 | 5 |
| FC Fulham | Southern Group Stage | 20,5 | 4 |
| FC Stevenage | - | 26,9 | 7 |
| Fleetwood FC | - | 27,5 | 9 |
| Gillingham | Southern Group Stage | 27,3 | 11 |
| Grimsby | Northern Group Stage | 26,8 | 6 |
| Harrogate Town | - | 28,4 | 4 |
| Huddersfield | - | 26,6 | 5 |
| Leeds United | Northern Group Stage | 20,3 | 2 |
| Leyton Orient | - | 24,3 | 11 |
| Lincoln City | - | 26,3 | 6 |
| Liverpool | Northern Group Stage | 21,3 | 5 |
| Luton | - | 26,5 | 2 |
| Man. City U21 | Northern Group Stage | 20,0 | 4 |
| Man. United | Northern Group Stage | 20,8 | 6 |
| Mansfield Town | Northern Group Stage | 29,4 | 8 |
| Milton | Southern Group Stage | 28,6 | 12 |
| Newcastle | Northern Group Stage | 21,3 | 5 |
| Newport County | Southern Group Stage | 26,2 | 6 |
| Northampton | - | 27,8 | 11 |
| Nottingham | Northern Group Stage | 20,8 | 2 |
| Notts | Northern Group Stage | 26,1 | 9 |
| Oldham | Northern Group Stage | 28,0 | 11 |
| Peterborough | - | 24,5 | 6 |
| Plymouth | - | 25,1 | 8 |
| Port Vale | - | 28,2 | 12 |
| Reading | Southern Group Stage | 25,5 | 2 |
| Rotherham | - | 25,7 | 9 |
| Salford City | - | 26,7 | 4 |
| Shrewsbury | Southern Group Stage | 27,3 | 12 |
| Stockport | - | 25,7 | 6 |
| Swindon | - | 26,3 | 9 |
| Tottenham | Southern Group Stage | 20,5 | 6 |
| Tranmere | - | 30,0 | 10 |
| Walsall | - | 26,2 | 13 |
| West Ham | - | 21,3 | 5 |
| Wigan | Northern Group Stage | 25,3 | 5 |
| Wolverhampton | Northern Group Stage | 20,8 | 4 |
| Wycombe | - | 26,6 | 11 |
Insgesamt nehmen 64 Mannschaften teil. The number of participations refers to tournament participations before the tournament. Cardiff City is participating in for the first time.
EFL Trophy
