Bryce Harper got even with the New York Mets in a hurry. Drilled by a pitch in his previous at-bat, the MVP candidate dented the Mets' playoff position by hitting a tiebreaking homer in the eighth inning that gave the Washington Nationals a 3-1 win Saturday in the opener of a day-night doubleheader. The Mets' fourth straight loss dropped them one game behind the Los Angeles Dodgers in the race for home-field advantage in their NL Division Series matchup next week.