Head to Head
| Wales SRC Trophy | 2019/05/04 13:30 | Carmarthen v Merthyr | W | 21-40 |
| Wales SRC Trophy | 2018/12/07 19:10 | Merthyr v Carmarthen | W | 30-5 |
| Wales SRC Trophy | 2018/04/21 13:30 | Merthyr v Carmarthen | L | 21-33 |
| Wales SRC Trophy | 2017/04/08 13:30 | Merthyr v Carmarthen | W | 30-21 |
| Welsh Premiership Challenge Cup | 2017/03/15 19:30 | Carmarthen v Merthyr | L | 37-31 |
| Wales SRC Trophy | 2016/12/03 14:30 | Carmarthen v Merthyr | L | 26-13 |