Andy Roddick for #1 for a few weeks before Roger Federer became the #1 after winning the Australian open on 2004.
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.
Men Andre Agassi
Wang Zhen (Eugene)
Novak Djokovic
Andy Roddick is the highest ranked American. He is #5 overall. The next is Sam Querry and then James Blake.
Argentinian Carlos Rodriguez was a tennis coach for a former number one ranked tennis player Justine Henin. He is currently the coach for tennis player Li Na.
She is a championship tennis player, often ranked number one among female players.
No he is not, Rafael Nadal is currently ranked #1 in the world.
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.
Rafael Nadal!
John McEnroe
Rafael Nadal is currently ranked no.1 men's singles tennis player (2010).