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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | -12y 20d | Kitzbuhel 1970 | |
| 2 | -6y 360d | Madrid-1 1975 | |
| 3 | 3y 198d | Madrid 1979 | |
| 4 | 8y 238d | Barcelona 1968 | |
| 5 | 9y 259d | Washington 1969 | |
| 6 | 10y 224d | Indianapolis 1981 | |
| 7 | 14y 254d | St. Petersburg 1969 | |
| 8 | 15y 49d | Munich 1989 | |
| 9 | 15y 108d | Barcelona 1968 | |
| 10 | 15y 110d | Mexico City 1969 | |
| 11 | 15y 112d | Madrid-1 1973 | |
| 12 | 15y 208d | Aix-en-Provence 1969 | |
| 13 | 15y 274d | St. Petersburg 1970 | |
| 14 | 15y 287d | Rome 1983 | |
| 15 | 15y 301d | Monte Carlo Masters 2002 | |
| 16 | 15y 308d | Madrid 1972 | |
| 17 | 15y 339d | Washington-2 1980 | |
| 18 | 15y 345d | North Conway 1980 | |
| 19 | 15y 350d | Washington 1983 | |
| 20 | 15y 364d | Indianapolis 1983 |
