P: 18 W: 6 D: 5 L: 7
Last meeting: 10 Feb 2001 — Blaenrhondda v Llanelli (5-0)
| Season | Date | Match | Result | Score | Competition |
|---|---|---|---|---|---|
| 1975-76 | Blaenrhondda v Llanelli | W | 1-0 | LEAGUE | |
| 1975-76 | 18 Oct 1975 | Llanelli v Blaenrhondda | L | 2-3 | LEAGUE |
| 1982-83 | 26 Mar 1983 | Llanelli v Blaenrhondda | D | 1-1 | LEAGUE |
| 1982-83 | 25 Apr 1983 | Blaenrhondda v Llanelli | L | 1-5 | LEAGUE |
| 1983-84 | Llanelli v Blaenrhondda | L | 0-2 | LEAGUE | |
| 1983-84 | 31 Dec 1983 | Blaenrhondda v Llanelli | L | 0-1 | LEAGUE |
| 1984-85 | 01 Dec 1984 | Llanelli v Blaenrhondda | L | 2-3 | LEAGUE |
| 1984-85 | 17 Apr 1985 | Blaenrhondda v Llanelli | D | 2-2 | LEAGUE |
| 1985-86 | 09 Nov 1985 | Llanelli v Blaenrhondda | W | 5-2 | LEAGUE |
| 1985-86 | 23 Apr 1986 | Blaenrhondda v Llanelli | D | 2-2 | LEAGUE |
| 1986-87 | 25 Oct 1986 | Llanelli v Blaenrhondda | W | 3-1 | LEAGUE |
| 1986-87 | 22 Apr 1987 | Blaenrhondda v Llanelli | D | 3-3 | LEAGUE |
| 1987-88 | 31 Oct 1987 | Llanelli v Blaenrhondda | W | 6-1 | LEAGUE |
| 1987-88 | 27 Feb 1988 | Blaenrhondda v Llanelli | W | 4-1 | LEAGUE |
| 1988-89 | 17 Sep 1988 | Blaenrhondda v Llanelli | D | 4-4 | LEAGUE |
| 1988-89 | 04 Feb 1989 | Llanelli v Blaenrhondda | L | 3-6 | LEAGUE |
| 1989-90 | 08 May 1990 | Llanelli v Blaenrhondda | L | 1-2 | BRAINS F |
| 2000-01 | 10 Feb 2001 | Blaenrhondda v Llanelli | W | 5-0 | WELSH CUP 4R |