| Mayo Junior A Championship - Knockout |
| 18/08/2018 |
| 16:00 | Kilmovee Shamrocks | 0-10 | vs | 2-5 | Killala | More |
| Venue : MacHale Park, Castlebar Referee : Martin Walsh |
| 18:00 | Balla | 2-8 | vs | 1-5 | Cill Chomain | More |
| Venue : Foxford Referee : Sean Reilly |
| 18:00 | Ballycastle | 2-11 | vs | 2-10 | Crossmolina Deel Rovers | More |
| Venue : Bangor Erris Referee : Brian Kilkelly |
| 18:00 | Kilmaine | 0-9 | vs | 2-9 | Achill | More |
| Venue : MacHale Park, Castlebar Referee : Jon Finn |
| 18:00 | Kilmeena | 4-18 | vs | 2-13 | Knockmore | More |
| Venue : Ballina Referee : Peter Geraghty |
| 18:00 | Tuar Mhic Éadaigh | 5-19 | vs | 0-6 | Ballina Stephenites | More |
| Venue : Munnelly Park Referee : Christopher Burke |
| 16/09/2018 |
| 12:30 | Ballina Stephenites | 0-18 | vs | 1-11 | Crossmolina Deel Rovers | More |
| Venue : Knockmore GAA Club Referee : Kieran Barnicle |
| 15:30 | Achill | 2-14 | vs | 0-16 | Kilmeena | More |
| Venue : MacHale Park, Castlebar Referee : Padraic Doherty |
| 15:30 | Killala | 0-9 | vs | 0-17 | Balla | More |
| Venue : Ballina Referee : Christopher Burke |
| 30/09/2018 |
| 15:00 | Achill | 1-7 | vs | 1-12 | Balla | More |
| Venue : MacHale Park, Castlebar Referee : Sean Reilly |
