WASHINGTON — What made this one hurt?Is it that this series means everything to the Washington Nationals and is just one of many for the Philadelphia Phillies? That Nationals Park has started to fill up, only for its spectators to be let down? That they are on pace to not just break the record for blown saves, but shatter it?Is it that they had Jose A. Ferrer and Kyle Finnegan in-house and traded them for prospects — even when those felt like the appropriate moves? Or that they had Robert Garcia in the organization and traded him for a big leaguer before they were ready to compete? Or that the man who allowed the go-ahead home run in Wednesday’s 5-4 loss was Richard Lovelady, who has been scarred from the many times he’s been cut over the last 365 days and had to suffer through this one alone?Is it that they lost thanks to a pinch hit home run from Derek Hill, one of the many players who cycled through this city during a five-year stretch when the Nationals were not playing meaningful baseball? Or that it came right after Kyle Schwarber, whose injury derailed the season in 2021 and kicked off the rebuild they are still trying to extricate themselves from, drew a walk to extend the inning?Or, is it what they have endured over the last three weeks, which has amplified the issues that have endured since the season began?Two weeks ago, on the cusp of a sweep in San Francisco, the Nationals took an eight-run lead into the bottom of the eighth inning and could not hold on when a 21-year-old born and raised in Northern Virginia hit a walk-off grand slam. On Tuesday, 24 hours before this madness unfolded again, the Nationals blew a two-run lead in the ninth after holding a five-run lead earlier in the game.