Timespan between first and last time ranked No. 4
The longest career span at No. 4 in ATP history belongs to Novak Djokovic: 18y 10m 9d, from 2007-06-11 to 2026-04-20. Second is Roger Federer (17y 7m 30d). Third is Andre Agassi (15y 5m 25d). The list includes 85 players in total. 8 of them spanned more than a decade at No. 4.
| Rank | Player | Timespan | First | Last |
|---|---|---|---|---|
| 1 | 18y 10m 9d | 2007-06-11 | 2026-04-20 | |
| 2 | 17y 7m 30d | 2003-03-03 | 2020-11-02 | |
| 3 | 15y 5m 25d | 1988-08-01 | 2004-01-26 | |
| 4 | 14y 5m 20d | 1973-11-12 | 1988-05-02 | |
| 5 | 12y 5m 3d | 2010-02-01 | 2022-07-04 | |
| 6 | 11y 1m 18d | 1979-01-01 | 1990-02-19 | |
| 7 | 10y 7m 12d | 1981-06-08 | 1992-01-20 | |
| 8 | 10y 4m 26d | 1986-04-07 | 1996-09-02 | |
| 9 | 9y 4m 15d | 1992-01-27 | 2001-06-11 | |
| 10 | 9y 1m 14d | 2010-01-11 | 2019-02-25 | |
| 11 | 8y 6m 12d | 2017-09-11 | 2026-03-23 | |
| 12 | 8y 4m 3d | 1975-01-27 | 1983-05-30 | |
| 13 | 7y 11m 28d | 1986-08-18 | 1994-08-15 | |
| 14 | 7y 5m 1d | 1974-10-21 | 1982-03-22 | |
| 15 | 7y 4m 16d | 1995-04-17 | 2002-09-02 | |
| 16 | 6y 6m 22d | 2008-09-08 | 2015-03-30 | |
| 17 | 6y 4m 10d | 1998-06-22 | 2004-11-01 | |
| 18 | 6y 0m 27d | 2008-02-25 | 2014-03-24 | |
| 19 | 5y 9m 28d | 1983-10-17 | 1989-08-14 | |
| 20 | 5y 3m 21d | 1992-07-06 | 1997-10-27 |
