Most Weeks at No. 1

Since the ATP computerized ranking was introduced in 1973, 30 players have held the world No. 1 ranking. The all-time leader is Novak Djokovic with 428 weeks, a margin 38% ahead of Roger Federer (310 weeks) and Pete Sampras (286 weeks). 14 players have spent 52 or more weeks at world No. 1 (at least one full year), with an average of 91 weeks across all ranked players.