It was virtually over shortly after it started.

The Yankees and Red Sox renewed their ancient rivalry on Friday night. The intensity, as usual, brought out some great play from the Yankees. The Red Sox, on the other hand, looked like a team that still hasn’t gotten its act together.

After rain delayed the start by 30 minutes, the Yankees were all over Boston out of the gate with a five-run first inning that featured a three-run homer by Jazz Chisholm Jr. and a two-run shot by Anthony Volpe. They added a pair of runs in the second inning, with each of them driving in another run, and the Red Sox never quite recovered — though they did mount a pair of charges — as the Yankees earned a 9-6 win before 46,783 at the Stadium.

“That was . . . the difference in the night right there,” Aaron Boone said. “Just great at- bats to lead things off . . . then Jazz with a big two-out, three-run homer. Just a really, really good offensive display those first couple innings.”

The Yankees (39-23), who finished with 14 hits, have won nine of their last 12 games and 15 of their last 20 to move a season-high 16 games over .500. The Red Sox (30-35) have lost eight of their last 11 and are in fourth place in the AL East, 10 ½ games behind the first-place Yankees.

Chisholm finished with three hits and two stolen bases to go with his four RBIs and Aaron Judge had three hits and an RBI to lift his batting average to .397.

Volpe left the game in the inning after he was hit by a pitch in the left elbow to drive in his third run. The Yankees termed the injury a “contusion” and said he’d been sent for X-rays and a CT scan, which came back negative. Boone said he doesn’t expect him to miss much time, if any.

Since he returned from an oblique strain Tuesday, Chisholm is 8-for-16 with two homers and six RBIs in four games. He said there is a key number regarding his torrid return: 70.

“Just go at 70% — that’s what’s been working for me,” Chisholm said, repeating advice he got from assistant hitting coach Pat Roessler. “He said at 70%, I’m one of the best out there. [At] 100%? I might be dog crap.’’

Before Chisholm went on a minor-league rehab assignment, he and the hitting coaches reviewed some of his at-bats from previous minor-league appearances, and he said, “I felt like I was hitting homers effortlessly . . . swinging as effortlessly as I could.”

He added: “I’ve really heard my whole life that I need to tone down the way I play. It’s electric, but you can be electric and controlled at the same time . . . I think I should stay at that.”

Yankees starter Will Warren (4-3) for the most part turned the page on his worst outing of the season, when he allowed seven runs and recorded only four outs against the Dodgers in Los Angeles on May 31. The righthander allowed only one hit through the first four innings and only one run through the first five before unraveling in the sixth.

He exited the game with an 8-2 lead after walking the bases loaded. Brent Headrick allowed a two-run single by Romy Gonzalez, so Warren’s final line was four runs, three hits and four walks in 5 1⁄3 innings with six strikeouts.

“I got a little off timing right there, and as the inning got longer, there definitely was some fatigue,” Warren said. “I feel better letting them beat me than putting them on base.”

Fernando Cruz, Jonathan Loaisiga and Devin Williams got the last eight outs without allowing a run. Williams earned his seventh save of the season.

The Yankees’ first-inning onslaught was relentless as they sent nine batters to the plate, pounded five hits and scored five runs, all with two outs. Those five and two more two-out runs in the second came off Walker Buehler, the same guy who earned a win and a save for the Dodgers in the 2024 World Series as they beat the Yankees in five games.

Trent Grisham led off the first with a walk and Judge doubled to put runners on second and third, but Cody Bellinger lined out to short and Paul Goldschmidt struck out. When Buehler got ahead of Chisholm 0-and-2, he was a strike away from escaping the jam, but Chisholm delivered a 417-foot three-run homer off the top of the centerfield wall and into Monument Park.

Jasson Dominguez followed with a single and Volpe turned around a 2-and-1 fastball for a 369-foot home run to right-centerfield and a 5-0 lead.

Judge singled and Goldschmidt reached on an error to put runners at the corners with two outs in the second. Chisholm had an RBI single to right, Dominguez drew a six-pitch walk to load the bases and Buehler hit Volpe to give the Yankees a 7-0 lead. “You walk into the dugout at 7-0 and there’s no better feeling,” Chisholm said. “You’re confident your team is going to go out and win.”

Goldschmidt hit a solo homer in the sixth for a 9-4 lead, but Rafael Devers’ two-run shot in the seventh made it 9-6.

Yankees closer Luke Weaver, who is on the injured list with a hamstring strain, has had a PRP injection and began a throwing program on Friday, according to Boone. He could be on the short end of the four to six weeks he is projected to miss    . . . Giancarlo Stanton remains at the team’s minor-league complex in Tampa facing live pitching and might go on a minor-league rehab assignment next week.