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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 15y 330d | Mallorca 2002 | |
| 2 | 15y 342d | Houston 2008 | |
| 3 | 16y 195d | Adelaide 2003 | |
| 4 | 16y 237d | Marseille 2003 | |
| 5 | 16y 249d | Vina del Mar 2013 | |
| 6 | 16y 261d | Prague 1996 | |
| 7 | 16y 268d | Prague 1993 | |
| 8 | 16y 283d | Tel Aviv 1993 | |
| 9 | 16y 288d | Rio De Janeiro 2020 | |
| 10 | 16y 290d | Genova 1991 | |
| 11 | 16y 295d | Sao Paulo 1990 | |
| 12 | 16y 314d | Adelaide 1998 | |
| 13 | 16y 322d | Sydney Outdoor 1998 | |
| 14 | 17y 8d | Geneva 1991 | |
| 15 | 17y 13d | Almaty 2024 | |
| 16 | 17y 16d | Munich 1991 | |
| 17 | 17y 33d | Bastad 2003 | |
| 18 | 17y 47d | Umag 2003 | |
| 19 | 17y 50d | Toulouse 1998 | |
| 20 | 17y 64d | Moscow 1991 |