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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 17y 288d | Genova 1992 | |
| 2 | 18y 14d | Bordeaux 1992 | |
| 3 | 18y 67d | Sopot 2004 | |
| 4 | 18y 67d | Delray Beach 1999 | |
| 5 | 18y 75d | Umag 2021 | |
| 6 | 18y 98d | Mexico City 1998 | |
| 7 | 18y 122d | Buenos Aires 2001 | |
| 8 | 18y 135d | Bastad 1999 | |
| 9 | 18y 173d | Buenos Aires 2025 | |
| 10 | 18y 210d | Estoril 1993 |
