Pete Alonso hit a missile for his first home run of the season, Dominic Smith and Michael Conforto also went deep, and the visiting New York Mets pummeled the slumping Boston Red Sox 7-4 on Monday night.Alonso, the home run champion a season ago with a record-setting 53 as a rookie, put a 1-for-12 start behind him with a two-run blast over the Green Monster as the Mets snapped a two-game skid. Smith’s homer drove in three runs, and Conforto hit a two-run shot.Seth Lugo pitched 1 1/3 scoreless innings for his first save.Mitch Moreland and Xander Bogaerts homered and each had two RBIs for the Red Sox, who lost their third straight at home. Boston pitching has given up seven runs in each of the defeats.The Mets got the scoring started in the second inning after J.D. Davis worked a leadoff walk. Conforto followed with a moonshot over the bullpens in right field off opener Josh Osich as New York jumped out to a 2-0 advantage.Osich (0-1) went two innings, giving up the two runs on two hits. He walked one and struck out one.