Head to Head
| Welsh Premiership | 2017/11/04 14:30 | Merthyr v Cardiff | L | 27-23 |
| Welsh Premiership | 2017/09/02 13:30 | Cardiff v Merthyr | W | 24-17 |
| Welsh Premiership | 2016/09/10 13:30 | Merthyr v Cardiff | L | 24-18 |
Home History
| WRU Challenge Cup | 2018/01/06 14:30 | Neath v Cardiff | W | 13-15 |
| Welsh Premiership | 2017/12/30 14:30 | Newport v Cardiff | L | 29-17 |
| Welsh Premiership | 2017/12/23 17:15 | Pontypridd v Cardiff | L | 20-18 |
| Welsh Premiership | 2017/12/01 19:15 | Cardiff v Bedwas | L | 10-22 |
| Welsh Premiership | 2017/11/25 12:00 | Ebbw Vale v Cardiff | W | 21-23 |
| Welsh Premiership | 2017/11/17 19:30 | Cross Keys v Cardiff | L | 35-27 |
| Welsh Premiership | 2017/11/10 19:30 | Cardiff v Bargoed | W | 18-10 |
| Welsh Premiership | 2017/11/04 14:30 | Merthyr v Cardiff | L | 27-23 |
Away History
| WRU Challenge Cup | 2018/01/06 14:30 | Newcastle Emlyn v Merthyr | W | 0-59 |
| Welsh Premiership | 2017/12/30 14:30 | Merthyr v Cross Keys | W | 43-10 |
| Welsh Premiership | 2017/12/23 14:30 | Merthyr v Bargoed | W | 33-23 |
| Welsh Premiership | 2017/12/01 19:15 | Merthyr v Ebbw Vale | W | 57-7 |
| Welsh Premiership | 2017/11/25 13:00 | Newport v Merthyr | W | 30-34 |
| Welsh Premiership | 2017/11/17 19:15 | Merthyr v Pontypridd | W | 50-21 |
| Welsh Premiership | 2017/11/11 13:30 | Bedwas v Merthyr | W | 12-23 |
| Welsh Premiership | 2017/11/04 14:30 | Merthyr v Cardiff | W | 27-23 |