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It’s only appropriate, on this last day of summer, that we can officially begin to discuss postseason baseball in Washington D.C. no longer as a “likelihood” or a “probability,” but as a reality. That’s the thing about the baseball season – a hot start is great, like the one the Nationals stormed out to by winning 10 of their first 14 games, but in the scope of a six-month marathon, it means very little. All the excitement of holding down first place is fantastic fun, but it does not mean anything until this time of year. There are no cheaply won postseason spots in our sport, and only sustained success over the duration of the spring and summer will lead to those meaningful games in October that Mike Rizzo, Davey Johnson and everyone around the organization have been talking about since Spring Training.

Yes, the National League East remains undecided, with a combination of eight Nationals wins and/or Braves losses still needed to determine the division crown. Beyond that lie the fight for home field advantage through the various rounds of the playoffs. These Nationals have taken nothing for granted so far this season, and you can be sure they won’t start now. Nevertheless, one indelible fact remains: there will be postseason baseball in our Nation’s Capital for the first time in 79 years.

Michael Morse celebrated as Ryan Zimmerman raced home on a wild pitch.

“What’s the big deal?” an exuberant Johnson jokingly questioned of the press corps, as fans watching his post-game press conference in the adjoining Lexus Presidents Club cheered his arrival.

The Nationals almost clinched their postseason spot Wednesday night in dramatic, surprising fashion, coming from nowhere to overcome a six-run, eighth-inning deficit, only to fall to the Dodgers, 7-6 in the ninth. While that would have been a game for the ages, long remembered by those who stuck it out to the end, it would have supported the script that is often preached, but not necessarily accurate, about this year’s Washington club, that all of this sudden success is a surprise. In actuality, it is the culmination of years of building the right way, from the ground up, and simply watching the pieces come together at the Major League level all at once. In a sense, it was much more fitting that the history was made thanks to a well-pitched, well-defended game, trademarks of a team that Washington fans have fallen in love with this season.

Drew Storen gave the game and the fans their endearing moment to cherish, as he faced the daunting middle of the Dodgers lineup – Matt Kemp, Adrian Gonzalez and Hanley Ramirez – holding a three-run lead in the ninth. The cushion would turn out to be more than enough. Storen painted a perfect, outside corner fastball to freeze Kemp, Wednesday night’s hero. He then handcuffed Gonzalez, the powerful lefty’s bat waving helplessly over a disappearing changeup. Finally, he blew away Nationals nemesis Hanley Ramirez – who owned a career .339 (147-for-433) mark with 27 home runs against the Nats coming into the at-bat – on a nasty slider to end it, pounding his mitt once and high-fiving catcher Kurt Suzuki in celebration.

Drew Storen struck out the side in the ninth to nail down the clinch.

“I didn’t even think about it until I saw it on the scoreboard afterwards,” said Storen of the clinching moment. “I was just having fun. The crowd was real into it. If you’re not out there having fun in that situation, you shouldn’t be out there.”

And though Storen provided the coup de gras, seemingly everyone chipped in. Ryan Zimmerman opened the scoring with a booming double to the left-center field gap, scoring Bryce Harper in the third inning. Danny Espinosa had an RBI-double of his own, and came in to score on a Suzuki sacrifice fly, the culmination of a hard-fought, professional at-bat. Ian Desmond and Jayson Werth each had a pair of hits, with the shortstop stealing one bag and the outfielder swiping a pair. As it has been all year with this team, you never know who the hero will be, and there were many of them Thursday night.

Ross Detwiler, meanwhile, continued to impress, and continued to show why this team has a real chance to make a deep October run. With six nearly flawless innings, in which a solo home run and a pair of singles were the only bumps in an otherwise smooth road to his career-best 10^th victory, he quieted the powerful Dodgers lineup to put the Nationals in position to clinch.

Zimmerman and Werth celebrate the historic night.

“It was great seeing all of them on their feet,” the lanky lefty said of the crowd. “It really gives you the chills a bit to see how into it all of them were.”

Detwiler has consistently gone about his business, and though he is sometimes overshadowed by his teammates, there is no hiding his 6-3 record and 2.76 ERA in 13 starts since the All-Star break. He also became the fourth Nationals starter to hit double-digits in wins on Thursday, with Edwin Jackson sitting on nine victories heading into his start tonight against Milwaukee.

Speaking of those pesky Brewers, they are suddenly hot, and have clawed their way back into the race for the second National League Wild Card spot. In fact, the final four series on the Nationals schedule – Milwaukee, Philadelphia, St. Louis and Philadelphia again – all bring teams fighting for every game, their postseason lives at stake. Each game will be its own challenge, as the Nats try to wrap up the division. Those battles begin again tonight. But for today, at least, allow yourself to soak in the reality.

This is happening.