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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 18y 4d | Tokyo Indoor 1993 | |
| 2 | 18y 184d | Toronto-1 1990 | |
| 3 | 18y 220d | Tokyo Indoor 1992 | |
| 4 | 18y 288d | Tokyo-2 1990 | |
| 5 | 18y 335d | Tokyo Indoor 1995 | |
| 6 | 19y 18d | Tokyo Indoor 1995 | |
| 7 | 19y 43d | Tokyo-2 1990 | |
| 8 | 19y 49d | Philadelphia 1991 | |
| 9 | 19y 149d | Philadelphia 1991 | |
| 10 | 19y 178d | Tokyo Indoor 1992 |
