MIRADOR DE EZARO, Spain (Reuters) - Spain's Joaquim Rodriguez strengthened his overall lead with victory on stage 12 of the Vuelta a Espana from Vilagarcia de Arousa to the summit finish of Mirador de Ezaro on Thursday. Alberto Contador finished second, about eight seconds back, with fellow Spaniard Alejandro Valverde in third place. Contador is second overall with Britain's Chris Froome occupying third position. The race ends in Madrid on September 9. (Writing by Alasdair Fotheringham; editing by Tony Jimenez) More...