Didi Gregorius’ actions following his most important action spoke loudest.

For after the shortstop blasted a Tyler Duffey fastball 369 feet into Yankee Stadium’s second deck in right field Saturday afternoon, ending his misery and extending that of the Yankees’ punching bags from the Land of 10,000 Lakes, he admired the ball’s flight for a moment as he held his bat in his left hand, swung his left arm forward, grabbed the bat with his right hand and politely tossed it toward the Yankees’ dugout.

If you could throw a title on this and enter it into the Best Short Film (Live Action) category at the Oscars, you’d call it, simply, “Relief.”

Except that the star himself offered an alternate title: “Satisfaction.”

“Just thinking back to my at-bats that I had against him [Friday], and after I had two strikes, he threw me that fastball, so I was prepared for it this time after he threw me the curveball in the dirt,” Gregorius explained. “I was ready for it this time, so that’s why my reaction was like that.”

Both relief and satisfaction — of the short-term variety, at least — should surge through this organization and its fan base like sugar through a 4-year-old at a Dylan’s Candy Bar. After dismantling the Twins to the tune of an 8-2 score in American League Division Series Game 2 to grab a 2-0 lead, the Yankees must win just once in their next three tries to advance to the AL Championship Series. The first opportunity comes Monday night at Target Field.

And the key hit in this one — the Yankees’ 12th straight postseason victory over the Twins — came from Gregorius, who registered arguably his worst regular season out of five as a Yankee and then kicked off this crucial month, with free agency waiting on the other side, by going 0-for-3 with a walk in ALDS Game 1. He didn’t hit a fair ball, striking out twice — including against Duffey on a fastball in the fifth inning — and fouling out to Twins catcher Mitch Garver.

In Game 2, he stroked one fair, far and fruitful, becoming the first Yankees shortstop to deliver a postseason grand slam. With that, the Yankees went up by a 7-0 margin, and they cruised the rest of the way thanks to five stellar innings by starting pitcher Masahiro Tanaka and four strong frames of relief.

“Obviously, the huge one from Didi, which was great to see,” Aaron Boone said in his characteristically efficient manner.

That huge one won’t negate what preceded it. Yet it will keep the Yankees moving forward this month and provide Gregorius with more opportunities to build his case for a return.

It would be hard to overstate how much the 29-year-old Gregorius hurt his case once he finished his rehabilitation from Tommy John surgery on his right elbow. In 82 games, totaling 344 plate appearances, he had a slash line of .238/.276/.441, with 16 home runs, and played subpar defense. In September his slash line was .190/.247/.380.

“I’ve been doing the same work I’ve been doing since I got here,” Gregorius said. “I didn’t try to change anything. Just try to swing at strikes. That’s one thing for me right now, … be patient. I’m just all over the place swinging at almost every ball.”

Duffey got him to chase a pair of pitches outside the zone in their Game 1 encounter.

Gregorius dribbled a second-inning single down the third-base line in his first at-bat Saturday — “I think [that] was the one that actually put it [momentum] out there for me,” he said — and when he faced Duffey again, he passed on an 0-and-2 slider in the dirt before fouling off the next pitch and then connecting on a navel-high fastball.

“They’ve really been trying to get him to expand and chase a little bit,” Boone said. “I expect this from Didi. Just when you think you’ve got him down, he’s got a big swing on him.”

How many more big swings does Gregorius have in him this month? Can the shortstop and team leader convert relief and satisfaction to redemption and euphoria? It’s one of the most compelling storylines of this already compelling Yankees month.