Since the ATP computerized ranking was introduced in 1973, this page lists the 30 players returned by the API for Top 1, rather than the complete historical total. 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 accumulated 52 or more weeks inside the Top 1, with an average of 91 weeks across all ranked players.