Pep Guardiola's decision to leave Sergio Aguero out of his Manchester City starting lineup Wednesday backfired badly in a 4-0 loss at Barcelona in the Champions League. Barcelona capitalized and seized its opportunities, with Lionel Messi scoring three goals and setting up Neymar for another. The loss at Camp Nou against Guardiola's former team exposed two of the manager's most important decisions as being off the mark. More...