| Rank | Player | Age at No. 1 | Date |
|---|
| 1 | | 19y 7m 21d | 2022-12-26 |
| 2 | | 20y 10m 7d | 2001-12-31 |
| 3 | | 21y 3m 29d | 2003-12-29 |
| 4 | | 22y 3m 28d | 1974-12-30 |
| 5 | | 22y 4m 11d | 1992-12-28 |
| 6 | | 22y 4m 15d | 1993-12-27 |
| 7 | | 22y 6m 26d | 2008-12-29 |
| 8 | | 22y 10m 12d | 1981-12-28 |
| 9 | | 23y 4m 12d | 1975-12-29 |
| 10 | | 23y 4m 14d | 2024-12-30 |
| 11 | | 23y 4m 19d | 2004-12-27 |
| 12 | | 23y 6m 25d | 1979-12-31 |
| 13 | | 24y 3m 15d | 2000-12-25 |
| 14 | | 24y 4m 4d | 1988-12-26 |
| 15 | | 24y 7m 4d | 2011-12-26 |
| 16 | | 24y 11m 12d | 1990-12-31 |
| 17 | | 25y 9m 23d | 1985-12-30 |
| 18 | | 27y 5m 12d | 1973-12-31 |
| 19 | | 29y 7m 11d | 2016-12-26 |
| 20 | | 29y 7m 28d | 1999-12-27 |