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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 16y 314d | Adelaide 1998 | |
| 2 | 18y 43d | Delray Beach 2008 | |
| 3 | 18y 274d | San Jose 2006 | |
| 4 | 18y 312d | Adelaide 2000 | |
| 5 | 18y 319d | Sydney 2000 | |
| 6 | 18y 348d | Washington 2001 | |
| 7 | 19y 8d | Copenhagen 2000 | |
| 8 | 19y 10d | Scottsdale 2000 | |
| 9 | 19y 85d | Sofia 2020 | |
| 10 | 19y 101d | Beijing 2005 | |
| 11 | 19y 116d | Hong Kong 1991 | |
| 12 | 19y 121d | Jakarta 1996 | |
| 13 | 19y 133d | Metz 2006 | |
| 14 | 19y 152d | St. Petersburg 2016 | |
| 15 | 19y 163d | Schenectady 1993 | |
| 16 | 19y 169d | Great Ocean Road Open 2021 | |
| 17 | 19y 171d | Stockholm 2022 | |
| 18 | 19y 208d | Boston 1999 | |
| 19 | 19y 224d | Adelaide 2007 | |
| 20 | 19y 228d | Chengdu 2024 |
