Record highlights
Sinner vs Alcaraz
Since June 2024 the No. 1 ranking has been passed back and forth between Jannik Sinner and Carlos Alcaraz. Sinner's first reign ran for 65 straight weeks. Alcaraz took the top spot at the 2025 US Open and finished 2025 as year-end No. 1. Sinner returned to No. 1 on 13 April 2026.
With 90 weeks, Sinner is 10th on the all-time list. The next names above him are Andre Agassi (101) and Björn Borg (109).
How the record has evolved
The ATP computer rankings started on 23 August 1973, with Ilie Năstase as the first No. 1. Since then, only five men have taken over the record for most total weeks at the top.
Complete all-time list
Every ATP world No. 1 since 1973. "Best run" is the player's longest consecutive stretch at No. 1. Active players are marked.
Frequently asked questions
Who has spent the most weeks at No. 1 in men's tennis?
Novak Djokovic, with 428 weeks. Roger Federer is second on 310 and Pete Sampras third on 286. Djokovic also holds the record for year-end No. 1 finishes with eight.
What is the record for consecutive weeks at No. 1?
Roger Federer spent 237 weeks in a row at No. 1, from 2 February 2004 to 17 August 2008. Next are Jimmy Connors (160) and Ivan Lendl (157). Djokovic's longest single run was 122 weeks.
How many weeks have Sinner and Alcaraz spent at No. 1?
As of the ATP rankings of 21 September 2026, Jannik Sinner has 90 weeks at No. 1 and Carlos Alcaraz has 66. The two have traded the top spot since June 2024.
How many players have been ranked world No. 1?
29 men have reached No. 1 since the ATP rankings began in 1973. The first was Ilie Năstase and the most recent new No. 1 was Jannik Sinner in June 2024. Patrick Rafter's single week in 1999 is the shortest time any player has spent at the top.
Were any weeks not counted?
Yes. The rankings were frozen from 23 March to 23 August 2020 during the COVID-19 pandemic. Djokovic was No. 1 for that whole period, but those 22 weeks are not included in his total.
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