Official men's tennis rankings are available on the Association of Tennis Professionals (ATP) World Tour's website under the Rankings section, which can be selected from the top navigation bar on the main page. The ATP World Tour is the governing body of the men's (and women's) professional tennis circuit.
Visitors can select rankings based on singles or doubles by selecting either the "Singles" or "Doubles" tab. Rankings are displayed in order of rank, from highest to lowest. Visitors can click on each player's name to view hisfull details, including the player's country, his current and highest ranking and his age. Additional information about eachplayer is available by selecting the "Player Activity" and "Rankings History" links.