Kim Clijsters Defend Chines Li Na In Australian Open 2011 FinalThe middle kingdom may eventually rule the women's tennis world - but not just yet.An emotional Kim Clijsters, who held back tears of joy after converting match point, took her fourth grand slam and her first outside the United States.The Belgian had dropped the first set in a nervous start but went on to win 3-6 6-3 6-3 in just over