The number one rank can change every month depending on the players ability of winning a trophy. The current number one is Rafael Nadal. Federer is the tennis player who has been number one for the longest amount of time. The it is Pete Sampras.
As of March 11, 2013; Novak Djokavich is the leader of the ATP World Rankings. He is the current Australian Open champion of 2013.
As of 6-19-2010 no1 is Rafael Nadal.
2015 update: Novak Djokovic is the current No1
Novak Djokovic is the number one male player in the world. 49-1 this year!
Roger Federer ended 2009 as world number 1
Stan Smith, the tennis player, was born on December 14th 1946. Stan is a former World number 1 American tennis player who was born in Pasadena, California.
Serena Williams (United States)
The WTA world number 1 is currently Caroline Wozniacki.
As of December 2010, Rafael Nadal is the number 1 ranked male tennis player. As of January 2011, Caroline Wozniacki is the number 1 ranked female tennis player.
No he is not, Rafael Nadal is currently ranked #1 in the world.