The Washington Nationals rallied to take a 4-3 lead in the bottom of the seventh, but gave it right back in the top of the eighth when Baltimore Orioles' catcher Matt Wieters took Nats' right-hander Blake Treinen deep for a two-run blast that gave the O's a lead and a sweep of the three-game set in the nation's capital. 5-4 final in D.C.