The Washington Nationals avoided what could have been the longest road trip ever measured, not in miles but in despair, by beating Colorado in extra innings Thursday afternoon. The Nats will pass the midway point of their season this week, and despite the presence of multiple prime prospects, the team’s record is six games worse than it was after 78 games last season. Digesting the Division: Philadelphia (47-31) took a one-game lead in the NL East over the New York Mets (46-32) by winning two of three over the weekend. Nick Castellanos went 6-12 with four runs scored and five RBIs in the series.