Althea Gibson.
Arthur Ashe
nobody....Aferican is not a word....African maybe Ashe
Federer of course!
It is Roger Federer.
As of January 19, 2014, the number one tennis player in the ATP is Rafael Nadal.
Cliff Drysdale?
the current ranking system sclculats how many points a player earns over a 12-months period
you get a world ranking in tennis by first being good at tennis and second of all winning competions like the astralia open etc
Rafael nadal is the best tennis palyer because he is the rank 1 player. You can see the ranking order by this link. http://tennisworld-tennis.blogspot.com/
Players with lower ranking usually play qualification round before starting official main tournament. This way they prove that they are currently in good players form to battle with higher ranking competitors. Famous and large tennis tournaments have minimum 3 qualification rounds.
He is a world class tennis player. In fact, his current ranking right now is #1 in the world.