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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 15y 157d | Newport 2013 | |
| 2 | 15y 357d | Queen's Club 2002 | |
| 3 | 16y 200d | 's-Hertogenbosch 2009 | |
| 4 | 16y 338d | Rosmalen 1992 | |
| 5 | 17y 30d | ''s-Hertogenbosch 2008 | |
| 6 | 17y 74d | Halle 1993 | |
| 7 | 17y 103d | Queen's Club 1998 | |
| 8 | 17y 131d | Newport 1998 | |
| 9 | 17y 227d | Stuttgart 2018 | |
| 10 | 17y 228d | Queen's Club 2010 | |
| 11 | 17y 235d | Nottingham 2015 | |
| 12 | 17y 251d | Stuttgart 2025 | |
| 13 | 17y 263d | 's-Hertogenbosch 2006 | |
| 14 | 17y 265d | Mallorca 2025 | |
| 15 | 17y 270d | Rosmalen 1994 | |
| 16 | 17y 297d | 's-Hertogenbosch 2019 | |
| 17 | 17y 302d | Queen's Club 1999 | |
| 18 | 17y 321d | Newport 2010 | |
| 19 | 17y 337d | Rosmalen 1993 | |
| 20 | 17y 341d | Newport 2003 |
