Nats Nightly: Giolito debuts, Harper homers and Nats handle Mets 5-0

Lucas Giolito featured a 95 mph fastball, devastating curveball and a sharp changeup to go four strong innings before a lengthy rain delay shortened his first appearance and the Washington Nationals downed the New York Mets for the second night in a row, 5-0, before 29,918 at Nats Park.