MIAMI -- Three years ago, the Rookie-level GCL Braves had a dynamite one-two punch in their lineup. A pair of fresh draftees, both picked out of high school: one in the third round of the 2019 MLB Draft, and the other in the 11th round.

For about 30 games that season, the pair of first-year pro ballplayers batted in the same lineup -- sometimes back to back, and sometimes in situations where they were plating each other.

Flash forward to Friday night in Miami, the opener of a four-game, three-day series between the Braves and Marlins at loanDepot park. Those two players, Michael Harris II and Vaughn Grissom, respectively, are batting in the bottom of the lineup.

Serendipitously, perhaps, but certainly evidence of Atlanta’s commitment to its homegrown prospects, Grissom (batting eighth) and Harris (batting ninth) came up clutch. Grissom led off the eighth inning with his first Major League double, and Harris followed suit with his 11th homer of the year, leading the Braves -- of the big league variety -- to a 4-3 win over their NL East rivals.

“There’s a lot of guys [on this team] that have played together in the Minors,” Harris said. “So there’s a lot of comfort in playing together and a lot of chemistry. … I feel I have that with [Grissom], hitting behind him and seeing him on base, just trying to do everything I can to drive him in. And that's what I did.”

The 21-year-old duo took similar paths to the Majors. Both skipped Triple-A and made their big league debuts straight out of Double-A Mississippi. Harris, who began the season at Double-A before getting the callup on May 28, played just 43 games with the Mississippi Braves, while Grissom, who started the year at High-A Rome and was promoted to Mississippi on July 12, played just 22 games in Double-A.

“I don't know about him, but it's definitely plenty of fun for me,” Grissom said. “It was cool. Like I could just get on, and he could just do his job and do what he does. He's great. We needed a run right there, and he got us two.

“We’ve done this before, but not on this level. So I'm glad to be finally getting a couple.”

Friday night was Grissom’s second big league game. The Braves’ No. 1 prospect, per MLB Pipeline, made his debut Wednesday vs. the Red Sox, becoming the youngest player in AL/NL history to homer and steal a base in a debut.

It’s still early in Grissom’s career -- he has only played in two games so far -- but he’s already made an obvious impact, and one that’s likely to be even more apparent if his career path continues to be anything like Harris’.

Harris debuted on May 28, against these same Marlins. Then, the Braves were below .500 and three games out of an NL Wild Card spot. After Friday’s win, Atlanta trails the New York Mets by just six games in the NL East while holding a four-game lead in the NL Wild Card race.

The young outfielder can’t be given all the credit, but it’s also not purely coincidence that Harris’ arrival in the Majors provided Atlanta with a jumpstart. He’s proven clutch in high-leverage situations while adding to the Braves’ clubhouse camaraderie. His hard-hit rate (44.1%), sweet-spot rate (32.9%) and barrel rate (10%) are all above league average. He has the third-most stolen bases of any Braves player this season (12), and he has yet to be caught stealing.

Manager Brian Snitker described Harris as having a “slow heartbeat” in those big spots. The outfielder described it in somewhat more understandable terms.

“Growing up, I've always been in high-pressure situations,” Harris said. “I'd rather have the big-time moment than just a regular situation. I kind of feed off of that type of energy in a game, and I'm the type of person that I kind of visualize something before it happens. That was one of the things that I visualized, bringing [Grissom] in and doing my job right there.”

If Harris continues to do his job -- and all signs are pointing that way -- there’s no telling where the Braves will be come October. Of course, there are other uncertainties, like how the pitching staff will fare. But for now, both Harris and Grissom are enjoying themselves. And as the saying goes, let the kids play.

“It's been a dream, and it's been real cool,” Grissom said. “I tell Mike all the time, like, I still can't believe it. I bet it's going to be like that for a while. But like I said, it's just been a dream so far.”