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.