For six months, they could stake claim to the title of "Best Team in Baseball." And after they won their first-ever postseason game Sunday afternoon, the Nationals had every reason to continue crowing about themselves.
Then they got beat up in St. Louis on Monday. Then they got beat up again on Wednesday, this time in front of a record-setting home crowd that gave the first playoff game in Washington in eight decades into a true playoff atmosphere.
And now, in the span of 72 hours, the "Best Team in Baseball" finds itself 27 outs from elimination before many on the roster have even had a chance to process what is going on.
"This isn't the situation we wanted to be in," shortstop Ian Desmond said following an 8-0 drubbing at the hands of the Cardinals in Game 3 of the NLDS. "But we're here and we're going to deal with it, just like we've been dealing with wins and losses all year long."
That was the prevalent theme throughout a somber Nationals clubhouse at the end of one of the more frustrating afternoons in team history. Just because they're facing a do-or-die scenario Thursday in Game 4, players don't believe it's necessary to change the dynamic all of a sudden.
"Our formula has worked pretty well," third baseman Ryan Zimmerman said. "I think it would be kind of bad to change it now."
Perhaps that philosophy works. There's enough talent on the Nationals' roster -- in the lineup, in the rotation, in the bullpen and on the bench -- to win two games in two days, no matter the opponent.
But there's also no proof that success from April through September guarantees success in October. The postseason, plain and simple, is a different animal.
Over the course of a 162-game schedule, there's always ample opportunity to snap out of funks, always another game to play and put yesterday's events in the rear-view mirror.
In a five-game Division Series, that's not the case. Every at-bat, every pitch is magnified. One clutch hit becomes the stuff of legend. One squandered opportunity becomes something that lingers all winter.
"That's how the playoffs are," Zimmerman said. "I think that's why all you have to do is get in. It's whomever's hot. These first series are obviously a little bit more leaning toward that, because it's such a short series. You get hot for a couple games, you have a commanding lead.
"But we've put ourselves in a good position by playing the way we did in the regular season, and now we have to win one game. If we win one game, we have a good chance with our guy on the mound."
Before they can get to their guy, Gio Gonzalez, in a decisive Game 5, the Nationals first need Ross Detwiler to lead them to victory in Game 4. That's easier said than done. The left-hander has enjoyed a breakthrough season in many ways, but he's still battle-untested, and the freshest memory of him with a ball in hand is the trouncing he took 10 days ago in St. Louis against the same lineup he'll face on Thursday.
"Det's capable of pitching a good game tomorrow," manager Davey Johnson said, shooting down any possibility of Gonzalez returning on short rest. "That's been our strength all year. These young guys have pitched great all year."
Great pitching is only one-half of the equation. It wouldn't matter who toed the rubber on Wednesday, because he couldn't have won a game when his teammates didn't score once.
A Nationals lineup that was among the most productive in the majors during the season's second half hasn't exactly gone ice-cold in the postseason. This team has put 36 men on base in the first three games of the series.
The problem, though, hasn't been putting men on base. It's been driving them in. After an 0-for-8 showing in Game 3, the Nationals are now a paltry 3-for-24 with runners in scoring position, stranding 30 total men on base.
The only three players who have come through in those situations: Kurt Suzuki, Tyler Moore and Jordan Zimmermann. Yes, the No. 8 hitter, a rookie off the bench and a pitcher.
Is that lack of playoff experience finally starting to show, with young hitters pressing at the plate in key spots?
"When you're down a few runs, you want to drive something in," first baseman Adam LaRoche said. "You can get a little anxious then and try to take more than they give you. Probably later in the game, that was more the case, guys trying to do a little extra to spark something."
It's a natural tendency to try to do too much when the pressure is ramped up. How could anyone in a Nationals uniform not feel that when standing in the box on Wednesday with two men on base and two out, the crowd of 45,017 imploring him to do something special?
That, of course, is the last thing anyone wants to do in that situation. Yet there's no escaping the fact the Nationals have arrived at a moment of desperation.
After mostly cruising through their regular season with few hints of true adversity -- ie. facing a must-win situation -- they'll now arrive at the park on Thursday knowing this could be their final game of the year.
"I believe in this team, I believe in these guys," right fielder Jayson Werth said. "We've been here all year. Over a 162-game season, we were the best team in baseball. And I still feel that way."
The best team in baseball over 162 games, though, isn't always the best team in baseball over a five-game playoff series.
That's a lesson the Nationals hope not to learn over the next 48 hours.