
A chronicle of the 29 men who have reached world number one in tennis and their paths to achieving this ranking.
At the turn of the millennium, global power players rose; amid fierce rivalries, young Federer emerged, heralding a new era in tennis.
Tennis' toughest era saw Federer, Nadal, Djokovic and Murray clash; Medvedev, Alcaraz and Sinner rise, showing the path to greatness endures.
The No. 1s who built modern tennis in the 70s and 80s-from Ilie Nastase's flair to Björn Borg's ice and John McEnroe's fire-turned raw talent into global superstardom.
In the 90s, serve-and-volley met relentless baseline power as Boris Becker, Pete Sampras and Andre Agassi battled to redefine No. 1 and prove staying there was the ultimate test.