Mets get blown out on opening night at Citi FieldNEW YORK — The grand re-opening of Citi Field started with the return of a shagging childhood friend and it ended with a disaster that lifted the Dodgers and the NL West over the National League.Trailing by a run in the eighth inning, Yasiel Puig slammed a three-run home run and Joc Pederson followed with a solo shot, lifting the Dodgers to a 7-3 victory and the division title in the opener of the Mets' first season at Citi Field.The Dodgers and Chicago Cubs will play a best-of-five Division Series beginning Thursday. The Mets, meanwhile, get a much-needed day off to