
A chronicle of the 29 men who have reached world number one in tennis and their paths to achieving this ranking.
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.
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.