Youngest Players at Top 1
The youngest player ever to enter the ATP Top 1 is Carlos Alcaraz, who first appeared at 19y 4m 7d on 2022-09-12. The second youngest is Lleyton Hewitt (20y 8m 26d on 2001-11-19). Third is Marat Safin (20y 9m 24d). 3 players in this list entered the Top 1 before their 21st birthday.
| Top | Player | Age at Top 1 | Date |
|---|---|---|---|
| 1 | 19y 4m 7d | 2022-09-12 | |
| 2 | 20y 8m 26d | 2001-11-19 | |
| 3 | 20y 9m 24d | 2000-11-20 | |
| 4 | 21y 0m 16d | 1980-03-03 | |
| 5 | 21y 2m 4d | 2003-11-03 | |
| 6 | 21y 2m 9d | 1977-08-15 | |
| 7 | 21y 5m 24d | 1992-02-10 | |
| 8 | 21y 8m 0d | 1993-04-12 | |
| 9 | 21y 10m 6d | 1974-07-08 | |
| 10 | 22y 2m 15d | 2008-08-18 | |
| 11 | 22y 3m 4d | 1998-03-30 | |
| 12 | 22y 5m 25d | 2004-02-02 | |
| 13 | 22y 6m 16d | 1999-03-15 | |
| 14 | 22y 9m 25d | 2024-06-10 | |
| 15 | 22y 11m 21d | 1983-02-28 | |
| 16 | 23y 0m 22d | 1975-09-08 | |
| 17 | 23y 2m 6d | 1991-01-28 | |
| 18 | 23y 6m 27d | 2003-09-08 | |
| 19 | 24y 0m 21d | 1988-09-12 | |
| 20 | 24y 1m 12d | 2011-07-04 |
