Women are not ranked by the ATP, but by the WTA (Women's Tennis Association). The current number one in singles is Victoria Azarenka, and in doubles it is Cara Black.
Andy Roddick is the highest ranked American. He is #5 overall. The next is Sam Querry and then James Blake.
being ranked number 1 in the world
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.
Rafael Nadal!
Rafael Nadal is currently ranked no.1 men's singles tennis player (2010).
As far as WTA rankings go, as of June 23, 2008 the highest ranked Belgian woman is Yanina Wickmeyer at #69. She is the only Belgian woman ranked in the top 100.
England's tennis no.1 in both men and women is Alex Bogdanovic(Ranked 183) and Anne Keothavong (Ranked 61) But if Great Britain is Concerned Andy Murray(Ranked 4) along with Keothavong(Ranked 61) are the top ranked.
The best Swedish tennis player is probably, Robin Soderling, who stands currently ranked 5 in the world.
Caroline Wozniacki.
Novak Djokovic is the top male tennis player on the ATP rankings.
Sharapova is a famous proffesional tennis player. she is ranked #3 right now.