It was almost exactly one year ago, beginning on Labor Day, when the Mets marched into Nationals Park, sweeping the Nats in three games to all but seal the National League East title. Perhaps the Nationals had a note of revenge on their minds Friday when, despite a strong effort by Noah Syndergaard, they grabbed a 4-1 win over the Mets to extend their division lead to 10 1/2 games.