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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 17y 234d | Halle 2018 | |
| 2 | 17y 300d | Halle 2024 | |
| 3 | 18y 55d | Halle 2015 | |
| 4 | 18y 65d | Queen's Club 2017 | |
| 5 | 18y 212d | Halle 2015 | |
| 6 | 18y 228d | Halle 2016 | |
| 7 | 18y 233d | Halle 2019 | |
| 8 | 18y 248d | Queen's Club 2015 | |
| 9 | 18y 299d | Halle 2025 | |
| 10 | 18y 312d | Queen's Club 2019 |
