| 1. Round | 05/08/2017 | Oldham Athletic | - | Oxford United | 0:2 |  |
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| 2. Round | 12/08/2017 | Walsall FC | - | Oldham Athletic | 2:1 |  |
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| 3. Round | 19/08/2017 | Oldham Athletic | - | Wigan Athletic | 0:2 | ||||
| 6. Round | 09/09/2017 | Fleetwood Town | - | Oldham Athletic | 2:2 | ||||
| 7. Round | 12/09/2017 | Bristol Rovers | - | Oldham Athletic | 2:3 | ||||
| 8. Round | 16/09/2017 | Oldham Athletic | - | Shrewsbury Town | 1:2 | ||||
| 9. Round | 23/09/2017 | Rotherham United | - | Oldham Athletic | 5:1 | ||||
| 22. Round | 16/12/2017 | Doncaster Rovers | - | Oldham Athletic | 1:1 | ||||
| 23. Round | 23/12/2017 | Plymouth Argyle | - | Oldham Athletic | 4:1 | ||||
| 24. Round | 26/12/2017 | Oldham Athletic | - | Fleetwood Town | 1:2 | ||||
| 28. Round | 13/01/2018 | Oldham Athletic | - | Rotherham United | 1:1 | ||||
| 30. Round | 27/01/2018 | Oldham Athletic | - | Plymouth Argyle | 1:2 | ||||
| 31. Round | 03/02/2018 | Oldham Athletic | - | Bradford City | 2:1 | ||||
| 33. Round | 13/02/2018 | Oldham Athletic | - | Milton Keynes Dons | 1:0 | ||||
| 38. Round | 17/03/2018 | Oldham Athletic | - | Portsmouth FC | 0:2 | ||||
| 40. Round | 30/03/2018 | Wigan Athletic | - | Oldham Athletic | 3:0 |
Northern Ireland