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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 18y 350d | New Haven 1993 | |
| 2 | 19y 60d | Basel 2025 | |
| 3 | 19y 172d | Memphis 2002 | |
| 4 | 19y 269d | Dubai 2006 | |
| 5 | 19y 351d | Washington 2021 | |
| 6 | 20y 0d | Indianapolis 1991 | |
| 7 | 20y 78d | Washington 1990 | |
| 8 | 20y 101d | Washington 2017 | |
| 9 | 20y 104d | Tokyo 2024 | |
| 10 | 20y 138d | Vienna 2007 | |
| 11 | 20y 219d | Tokyo 2001 | |
| 12 | 20y 313d | Washington 2009 | |
| 13 | 20y 318d | Memphis 1999 | |
| 14 | 21y 5d | Indianapolis 1992 | |
| 15 | 21y 6d | Tokyo 2023 | |
| 16 | 21y 14d | Dubai 2001 | |
| 17 | 21y 22d | Sydney Indoor 1992 | |
| 18 | 21y 59d | Vienna 2002 | |
| 19 | 21y 76d | Washington 1991 | |
| 20 | 21y 100d | Memphis 1998 |
