by Justin Davis Agence France Presse MOSCOW, Russia — A  Diego Costa goal handed World Cup hopefuls Spain their first win of the World Cup although dogged Iran came close to causing a major upset on Wednesday. The victory in Kazan puts the 2010 winners on course for the last 16. Costa, who scored twice in a 3-3 opening draw with Portugal in Sochi, courted controversy early in the Group B encounter when he […]