NEW YORK — Jonathon Niese won for the first time in a month, Michael Conforto homered and the New York Mets inched closer to an NL East title with their 4-0 victory over the Atlanta Braves on Monday night. Daniel Murphy lined a two-run double, Yoenis Cespedes had three hits and the Mets handed hard-luck Shelby Miller (5-16) his 15th straight defeat. New York stretched its lead to 6 1/2 games over the second-place Nationals with 12 to play and lowered its magic number for clinching the division to seven.