Youngest Players at Top 5
The youngest player ever to enter the ATP Top 5 is Michael Chang, who first appeared at 17y 5m 16d on 1989-08-07. The second youngest is Boris Becker (17y 10m 22d on 1985-10-14). Third is Andre Agassi (18y 2m 19d). 23 players in this list entered the Top 5 before their 21st birthday.
| Top | Player | Age at Top 5 | Date |
|---|---|---|---|
| 1 | 17y 5m 16d | 1989-08-07 | |
| 2 | 17y 10m 22d | 1985-10-14 | |
| 3 | 18y 2m 19d | 1988-07-18 | |
| 4 | 18y 3m 17d | 1974-09-23 | |
| 5 | 18y 7m 13d | 1983-04-04 | |
| 6 | 18y 11m 6d | 2005-05-09 | |
| 7 | 19y 1m 26d | 1990-10-08 | |
| 8 | 19y 2m 20d | 2022-07-25 | |
| 9 | 19y 7m 24d | 1984-04-09 | |
| 10 | 19y 8m 8d | 1994-05-09 | |
| 11 | 19y 9m 4d | 1978-11-20 | |
| 12 | 19y 10m 20d | 1985-12-09 | |
| 13 | 19y 11m 8d | 2007-04-30 | |
| 14 | 20y 3m 16d | 2023-08-14 | |
| 15 | 20y 4m 1d | 2001-06-25 | |
| 16 | 20y 4m 4d | 1991-05-20 | |
| 17 | 20y 4m 22d | 2017-09-11 | |
| 18 | 20y 5m 4d | 2003-02-03 | |
| 19 | 20y 6m 14d | 2009-04-06 | |
| 20 | 20y 7m 15d | 2000-09-11 |
