Maria Sharapova’s engagement ring causes a stir during the launch of her Australian Open dress….

Maria Sharapova and her boyfriend of one year, LA Lakers guard Sasha Vujacic are engaged. The world’s top 2 players, Rafael Nadal and Roger Federer, will square off in successive charity exhibitions December 21st and 22nd in Switzerland and Spain. Federer played his 900th career ATP match against Taylor Dent at the Stockholm Open. Elena Dementieva and Jelena Jankovic may not be in good enough heal…