Ranking History For Ian Williamson
Start position
Finish position
(NR) Not ranked
| Season | Start position | Finish position | |
|---|---|---|---|
| 1982-1983 (NR) | |||
| 1983-1984 (NR) | |||
| 1984-1985 | 47 | ||
| 1985-1986 | 47 | 67 | |
| 1986-1987 | 67 | 80 | |
| 1987-1988 | 80 | 89 | |
| 1988-1989 | 89 | 92 | |
| 1989-1990 | 92 | 103 | |
| 1990-1991 | 103 | 106 | |
| 1991-1992 | 106 | 125 | |
| 1992-1993 | 125 | 165 | |
| 1993-1994 | 165 | 216 | |
| 1994-1995 | 216 | 283 | |
| 1995-1996 | 283 | 430 | |
| 1996-1997 | 430 | 456 |