3d
Tennis365 on MSNThe 10 men with the most ATP titles before turning 22: Carlos Alcaraz with 17, Bjorn Borg peerlessSix men have won 20 or more tournaments before their 22nd birthday, while four have reached the milestone of 25.
Some of the best players in ATP history have missed out on the world No 1 ranking - we rank nine of the greatest.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results