Updated Friday, July 18, 2008 0:00 am TWN, AP Cavendish wins 12th stage; 3rd rider tests positiveCadel Evans of Australia retained the overall leader’s yellow jersey, trailing in the main pack. He has a one-second lead over Frank Schleck of Luxembourg and a 38-second lead over American rider Christian Vande Velde. Cavendish, a Team Columbia rider who had never won a Tour stage before this year, outpaced Sylvain Chavanel of France in second and Gert Steegmans of Belgium in third. | Europe Breaking News Most Read |