Timespan between first and last time ranked No. 6
The longest career span at No. 6 in ATP history belongs to Roger Federer: 18y 4m 25d, from 2002-11-04 to 2021-03-29. Second is Novak Djokovic (18y 3m 5d). Third is Andre Agassi (17y 4m 25d). The list includes 116 players in total. 8 of them spanned more than a decade at No. 6.
| Rank | Player | Timespan | First | Last |
|---|---|---|---|---|
| 1 | 18y 4m 25d | 2002-11-04 | 2021-03-29 | |
| 2 | 18y 3m 5d | 2007-04-23 | 2025-07-28 | |
| 3 | 17y 4m 25d | 1988-06-06 | 2005-10-31 | |
| 4 | 14y 10m 14d | 1973-10-22 | 1988-09-05 | |
| 5 | 12y 8m 29d | 1980-10-20 | 1993-07-19 | |
| 6 | 11y 6m 7d | 1978-10-02 | 1990-04-09 | |
| 7 | 11y 1m 11d | 1985-12-09 | 1997-01-20 | |
| 8 | 10y 9m 22d | 1990-09-10 | 2001-07-02 | |
| 9 | 9y 4m 16d | 2009-01-19 | 2018-06-04 | |
| 10 | 9y 0m 10d | 1985-10-21 | 1994-10-31 | |
| 11 | 8y 10m 8d | 1974-10-28 | 1983-09-05 | |
| 12 | 8y 7m 21d | 1989-06-12 | 1998-02-02 | |
| 13 | 8y 4m 7d | 1989-05-01 | 1997-09-08 | |
| 14 | 8y 3m 24d | 2007-10-22 | 2016-02-15 | |
| 15 | 7y 8m 21d | 1974-08-26 | 1982-05-17 | |
| 16 | 7y 7m 3d | 1997-08-25 | 2005-03-28 | |
| 17 | 7y 3m 18d | 2015-11-02 | 2023-02-20 | |
| 18 | 7y 3m 4d | 1995-03-27 | 2002-07-01 | |
| 19 | 6y 9m 27d | 2003-01-27 | 2009-11-23 | |
| 20 | 6y 8m 7d | 1984-06-11 | 1991-02-18 |
