Tournament Record - John Griffiths In Welsh Amateur Championship
| Played | Winner | Final | Semi-final | Quarter-final | Last 16 | Last 32 | Prize Money | Centuries |
|---|---|---|---|---|---|---|---|---|
| 6 | 0 | 0 | 0 | 0 | 0 | 0 | 250 | 0 |
| Tournament | Finish | Prize Money (GBP) |
|---|---|---|
 1990 Welsh Amateur Championship |
Still competing | 0 |
| 1986 Welsh Amateur Championship |
Final | 250 |
| 1984 Welsh Amateur Championship |
Last 64 | 0 |
| 1981 Welsh Amateur Championship |
Semi-final | 0 |
| 1980 Welsh Amateur Championship |
Last 16 | 0 |
| 1974 Welsh Amateur Championship |
Last 16 | 0 |