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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | -26y 313d | Dublin 1968 | |
| 2 | -14y 113d | Manchester 1968 | |
| 3 | -12y 20d | Kitzbuhel 1970 | |
| 4 | -11y 323d | Istanbul 1975 | |
| 5 | -6y 360d | Madrid-1 1975 | |
| 6 | 0y 23d | Sydney-2 1975 | |
| 7 | 3y 198d | Madrid 1979 | |
| 8 | 7y 273d | Berkeley 1968 | |
| 9 | 7y 312d | Auckland 1971 | |
| 10 | 8y 238d | Barcelona 1968 | |
| 11 | 9y 259d | Washington 1969 | |
| 12 | 10y 35d | Vina del Mar 1981 | |
| 13 | 10y 224d | Indianapolis 1981 | |
| 14 | 10y 259d | St. Louis WCT 1972 | |
| 15 | 10y 294d | Johannesburg-2 1976 | |
| 16 | 10y 336d | Santiago 1981 | |
| 17 | 11y 300d | Johannesburg-2 1977 | |
| 18 | 12y 176d | Miami 1977 | |
| 19 | 13y 153d | San Juan 1968 | |
| 20 | 13y 276d | St. Petersburg 1968 |
