Yes.
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.
She is a championship tennis player, often ranked number one among female players.
Tennis hold a second rank in worldwide sports
Roger Federer
According to espn.com, as of January 14, 2008 the second ranked woman tennis player in the world is Svetlana Kuznetsova of Russia.
A list of female African American tennis players that are ranked will most likely include the Williams Sisters, Venus and Serena. Throughout history, other ranked female tennis players that are African American have included Althea Gibson, Ora Washington and Zina Garrison.
Rafael Nadal!
Ina Ivanovic is a popular Serbian professional tennis player. She was ranked #1 in 2008.
The world's number one female tennis champion is Serena Williams. Williams represents the United States, and has been ranked number one female champion in the world on six different occasions.
Rafael Nadal is currently ranked no.1 men's singles tennis player (2010).
Former World No. 1 German female tennis player