| Cardiff vs | Monmouthshire | ||||
| Matches | 3 | ||||
| Won | 1 | ||||
| Lost | 2 | ||||
| Drawn | 0 | ||||
| Points For | 15 | ||||
| Points Against | 10 | ||||
| Date | Home | Away | Venue | ||
| 21/12/1918 | Monmouthshire | 5 | 0 | Cardiff | Unknown |
| 08/02/1919 | Cardiff | 6 | 10 | Monmouthshire | Cardiff Arms Park, Cardiff |
| 01/05/1920 | Cardiff | 4 | 0 | Monmouthshire | Cardiff Arms Park, Cardiff |
| TEAM | P | W | D | L | PF | PA | PTS | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ebbw Vale | 6 | 5 | 0 | 1 | 203 | 88 | 31 | ||||
| Carmarthen Quins | 8 | 6 | 0 | 2 | 197 | 165 | 29 | ||||
| Llandovery | 7 | 5 | 0 | 2 | 223 | 211 | 27 | ||||
| Cardiff | 6 | 4 | 0 | 2 | 213 | 184 | 25 | ||||
| Aberavon | 8 | 4 | 0 | 4 | 225 | 263 | 21 | ||||
| Swansea | 7 | 3 | 0 | 4 | 162 | 189 | 17 | ||||
| RGC 1404 | 8 | 2 | 0 | 6 | 250 | 266 | 17 | ||||
| Pontypool | 7 | 3 | 0 | 4 | 145 | 149 | 16 | ||||
| Newport | 7 | 2 | 0 | 5 | 176 | 183 | 16 | ||||
| Bridgend Ravens | 8 | 2 | 0 | 6 | 197 | 293 | 14 | ||||