For years the Washington Nationals and their fans waited for this day.

Their two phenoms on the same field performing the way they envisioned back when being favored to win a World Series was something meant mostly for other teams. This is the year it’s supposed to all come together for the Nationals, starting with their otherworldly ace and their fiery 20-year-old outfielder.

In the Nationals’ 2-0 Opening Day victory over the Miami Marlins Monday afternoon, Bryce Harper and Stephen Strasburg issued their opening salvo to the rest of the major leagues: We’ve arrived.

Harper strode to the plate in the bottom of the first inning with two outs. He watched a split-fingered fastball from Ricky Nolasco go by. Then he crushed a curveball into the right-field seats for a home run.

In his second at-bat, he did it again.

This one was a slider, a 3-2 pitch from Nolasco that came after Harper had seen every other pitch in his arsenal, laid off the ones he didn’t like, and fouled off the other two. It, too, went to the right-field seats.

He added a strike to home plate from left field in the seventh to start an inning-ending double play on the Marlins’ only real threat of the afternoon.

The 45,274 at Nationals Park, the largest regular-season crowd in the park’s history, stood and cheered him at every opportunity. They roused him from the dugout for a curtain call. They showered him with their praise each time he came to the plate the rest of the afternoon, the thought of what else this season could bring likely dancing in their minds.

And while Harper was accounting for all of the Nationals’ offense, Strasburg was busy making an opening statement of his own.

There were the 19 straight batters retired between a game-opening single by Juan Pierre and a one-out, seventh-inning double by Giancarlo Stanton. There were the 10 groundouts, the balls pounded into the dirt frustratingly and repeatedly, along with three strikeouts.

There were the radar gun readings, starting off in the mid-90s and consistently building with each frame until there were 97s and 98s popping up on the stadium scoreboard with regularity.