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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 15y 158d | Estoril 2006 | |
| 2 | 15y 269d | Houston 2005 | |
| 3 | 15y 330d | Mallorca 2002 | |
| 4 | 15y 342d | Houston 2008 | |
| 5 | 16y 47d | St. Poelten 1994 | |
| 6 | 16y 86d | Bucharest 1993 | |
| 7 | 16y 97d | Palermo 2002 | |
| 8 | 16y 108d | Kitzbuhel 1990 | |
| 9 | 16y 117d | Bastad 1990 | |
| 10 | 16y 192d | Umag 2000 | |
| 11 | MARMehdi Tahiri | 16y 229d | Casablanca 1994 |
| 12 | 16y 229d | Bastad 2009 | |
| 13 | 16y 241d | Munich 1991 | |
| 14 | 16y 249d | Vina del Mar 2013 | |
| 15 | 16y 249d | Umag 2013 | |
| 16 | 16y 254d | Umag 1991 | |
| 17 | 16y 261d | Prague 1996 | |
| 18 | 16y 268d | Prague 1993 | |
| 19 | 16y 283d | Florence 1991 | |
| 20 | MARKarim Alami | 16y 284d | Casablanca 1990 |