There’s been a lot of postgame thinking to do for Tony Vitello given the new Giants manager’s frustrating 3-8 start in his jump from college coach to the major leagues. Vitello had a little extra time following Sunday afternoon’s game with a night contest the next day to ponder everything that went wrong in San Francisco’s third straight loss, when he was ejected for the first time in his career for arguing in the seventh after Jerar Encarnación was ruled out for running inside the designated lane on his way to first base. Vitello is determined to figure it out.