Quintana extends Vuelta lead after Contador stuns Froome
ARAMON FORMIGAL, Spain — A surprise attack by Alberto Contador helped Nairo Quintana boost his lead over Chris Froome to more than three minutes after Sunday’s 15th stage of the Spanish Vuelta. An audacious move by Contador’s Tinkoff team caught the peloton off guard with an attack at the start of the short 118.5-kilometer (74-mile)