Tournament Record - Ian Williamson In World Championship
| Played | Winner | Final | Semi-final | Quarter-final | Last 16 | Last 32 | Prize Money | Centuries |
|---|---|---|---|---|---|---|---|---|
| 14 | 0 | 0 | 2 | 0 | 4 | 10 | 2,500 | 2 |
| Tournament | Finish | Prize Money (GBP) |
|---|---|---|
 1996 World Championship |
Round 3 | 0 |
| 1995 World Championship |
Round 4 | 0 |
| 1994 World Championship |
Round 5 | 0 |
| 1993 World Championship |
Round 7 | 500 |
| 1992 World Championship |
Last 128 | 750 |
| 1991 World Championship |
Last 128 | 500 |
| 1990 World Championship |
Last 128 | 0 |
| 1989 World Championship |
Last 128 | 0 |
| 1988 World Championship |
Last 96 | 0 |
| 1987 World Championship |
Last 96 | 0 |
| 1986 World Championship |
Last 96 | 0 |
| 1985 World Championship |
Last 80 | 0 |
| 1984 World Championship |
Last 48 | 450 |
| 1983 World Championship |
Last 48 | 300 |