Youngest Players at Year-End No. 4
The youngest player to finish a season ranked No. 4 in ATP history is Mats Wilander, who achieved it at the age of 19y 4m 4d in 1983. The second youngest is Andre Agassi (20y 8m 2d, 1990).
| Rank | Player | Age at EOY No. 4 | Year |
|---|---|---|---|
| 1 | 19y 4m 4d | 1983 | |
| 2 | 20y 8m 2d | 1990 | |
| 3 | 20y 8m 5d | 2017 | |
| 4 | 21y 1m 4d | 1988 | |
| 5 | 21y 3m 15d | 1992 | |
| 6 | 21y 7m 14d | 2008 | |
| 7 | 22y 4m 9d | 2023 | |
| 8 | 22y 10m 18d | 2002 | |
| 9 | 22y 11m 11d | 1993 | |
| 10 | 23y 2m 12d | 1991 | |
| 11 | 23y 4m 15d | 2021 | |
| 12 | 24y 4m 29d | 1978 | |
| 13 | 24y 6m 25d | 2000 | |
| 14 | 24y 8m 18d | 1980 | |
| 15 | 24y 10m 2d | 2005 | |
| 16 | 24y 10m 17d | 2020 | |
| 17 | 24y 11m 0d | 2004 | |
| 18 | 25y 6m 22d | 1981 | |
| 19 | 25y 9m 6d | 1997 | |
| 20 | 25y 9m 14d | 1999 |
