Tournament Record - Mark O'Sullivan In Welsh Open
| Played | Winner | Final | Semi-final | Quarter-final | Last 16 | Last 32 | Prize Money | Centuries |
|---|---|---|---|---|---|---|---|---|
| 4 | 0 | 0 | 0 | 0 | 0 | 0 | 195 | 0 |
| Tournament | Finish | Prize Money (GBP) |
|---|---|---|
 1996 Welsh Open |
Round 5 | 0 |
| 1995 Welsh Open |
Round 3 | 0 |
| 1994 Welsh Open |
Last 128 | 195 |
| 1993 Welsh Open |
Round 2 | 0 |