Ana IvanoviÄ ( Serbian : Ð Ð 1\/2 Ð Ð Ð Ð Ð 1\/2 Ð 3\/4 Ð Ð Ñ ) born November 6 , 1987 , in Belgrade , Serbia ( then Yugoslavia ) , is a Serbian tennis player . Ana IvanoviÄ ( Serbian Cyrillic : Ð Ð 1\/2 Ð Ð Ð Ð Ð 1\/2 Ð 3\/4 Ð Ð Ñ ) ( born November 6 , 1987 , in Belgrade , SR Serbia , Yugoslavia ) is a former World No. 1 Serbian tennis player .