Oldest Players at Year-End No. 1
| Rank | Player | Age at EOY | Year |
|---|---|---|---|
| 1 |  Novak Djokovic | 36y 7m 3d | 2023 |
| 2 |  Rafael Nadal | 33y 6m 27d | 2019 |
| 3 |  Ivan Lendl | 29y 9m 18d | 1989 |
| 4 | Andre Agassi | 29y 7m 28d | 1999 |
| 5 |  Andy Murray | 29y 7m 11d | 2016 |
| 6 |  Roger Federer | 28y 4m 20d | 2009 |
| 7 |  Ilie Nastase | 27y 5m 12d | 1973 |
| 8 | Pete Sampras | 27y 4m 16d | 1998 |
| 9 | Jimmy Connors | 26y 3m 23d | 1978 |
| 10 |  Stefan Edberg | 25y 11m 11d | 1991 |
| 11 | John McEnroe | 25y 10m 15d | 1984 |
| 12 | Bjorn Borg | 24y 6m 23d | 1980 |
| 13 | Mats Wilander | 24y 4m 4d | 1988 |
| 14 |  Gustavo Kuerten | 24y 3m 15d | 2000 |
| 15 |  Jannik Sinner | 23y 4m 14d | 2024 |
| 16 |  Guillermo Vilas | 23y 4m 12d | 1975 |
| 17 | Carlos Alcaraz | 22y 8m 14d | 2026 |
| 18 | Jim Courier | 22y 4m 11d | 1992 |
| 19 |  Lleyton Hewitt | 21y 10m 6d | 2002 |
| 20 | Andy Roddick | 21y 3m 29d | 2003 |