Face à face
| Pays de Galles - Premiership | 2018/12/14 19:15 | Merthyr v Cardiff | L | 28-34 |
| Pays de Galles - Premiership | 2018/09/01 13:30 | Cardiff v Merthyr | W | 18-24 |
| Pays de Galles - Premiership | 2018/02/09 19:15 | Cardiff v Merthyr | W | 20-25 |
| WRU Challenge Cup | 2018/01/27 14:30 | Cardiff v Merthyr | W | 12-37 |
| Pays de Galles - Premiership | 2017/11/04 14:30 | Merthyr v Cardiff | W | 27-23 |
| Pays de Galles - Premiership | 2017/09/02 13:30 | Cardiff v Merthyr | L | 24-17 |
| Pays de Galles - Premiership | 2016/09/10 13:30 | Merthyr v Cardiff | W | 24-18 |