Tournament Record - Ian Williamson In International Open
| Played | Winner | Final | Semi-final | Quarter-final | Last 16 | Last 32 | Prize Money | Centuries |
|---|---|---|---|---|---|---|---|---|
| 9 | 0 | 0 | 2 | 0 | 4 | 10 | 2,000 | 0 |
| Tournament | Finish | Prize Money (GBP) |
|---|---|---|
 1994 International Open |
Round 6 | 0 |
| 1993 International Open |
Round 6 | 0 |
| 1989 International Open |
Last 64 | 875 |
| 1988 International Open |
Last 96 | 0 |
| 1987 International Open |
Last 64 | 875 |
| 1986 International Open |
Last 96 | 0 |
| 1984 International Open |
Last 80 | 150 |
| 1983 International Open |
Round 1 | 0 |
| 1982 International Open |
Last 48 | 100 |