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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 17y 251d | Stuttgart 2025 | |
| 2 | 18y 58d | Newport 2010 | |
| 3 | 18y 102d | Queen's Club 1999 | |
| 4 | 18y 109d | Nottingham 1999 | |
| 5 | 18y 125d | 's-Hertogenbosch 2016 | |
| 6 | 18y 136d | Halle 1993 | |
| 7 | 18y 213d | Newport 2000 | |
| 8 | 18y 255d | Queen's Club 2007 | |
| 9 | 18y 267d | Nottingham 2007 | |
| 10 | 18y 287d | Halle 1993 |
