Former World No. 1 German female tennis player
As of 6-19-2010 no1 is Rafael Nadal. 2015 update: Novak Djokovic is the current No1
As he wanted to become world no1 tennis player he wanted to play... So he likes it.
As of November 2012, it is again Novac Djokovic. Federer held top position for the few months prior