SAN DIEGO — The Dodgers finally landed a lot of little jabs as an offense Sunday against the San Diego Padres.

And in a pivotal, sweep-evading 8-2 win at Petco Park — which once again tied the two teams for first place in the National League West standings — it allowed their slumping lineup to deliver some badly needed knockout blows.

For the first time this weekend, the Dodgers looked like themselves at the plate.

They bashed four home runs, none bigger than a tie-breaking three-run shot from backup catcher Dalton Rushing in the seventh that ultimately decided the game.

They strung together nine hits and four walks, cracking a Padres pitching staff that had smothered them over the first two games in this rivalry’s final renewal of the season.

Most importantly, however, they did all the little things that have too often gone missing during their recent two-month funk; one in which they’ve ranked 24th in the majors in scoring since the start of July, and let what was once a nine-game lead in the division turn into a dogfight down the stretch.

They extended at-bats. Battled with two strikes. And, at long last, earned the kind of pitches their star-studded roster could wallop.

“For us to come out here and execute as an offense, way better than we did the last couple days, that’s a big boost for us,” said first baseman Freddie Freeman, who had two home runs to help the Dodgers salvage the series finale.

“When you expand the zone, the slugging percentage is going to go down, because pitchers are going to continue to expand,” manager Dave Roberts added. “But when you earn good counts and get good pitches, control the zone, then slug happens. You can’t always chase it. Which, I thought, today we did a really good job of.”

Ahead of first pitch, Roberts spoke at length about the team’s recent offensive struggles — following up on his Saturday night critique of the club’s increasingly all-or-nothing approach.

“We haven’t really been in-sync,” Roberts said. “It’s been disjointed a lot, as far as the offense.”

When asked if that meant his team needed to adopt more of a small-ball mentality, however, Roberts pushed back.

“I think it’s a fair question,” he said. “But I couldn’t disagree more.”

After all, his team is still stocked full of All-Stars, MVPs and future Hall of Famers. At their core, they are built to bludgeon opponents — not slap singles and drop down sacrifice bunts.

“Slugging is still a part of it,” he said. “I definitely don’t want guys to hit like I did.”

Around the margins, though, there were ways Roberts felt the Dodgers (74-57) could better position themselves to do that. Like trying to work better counts, stay alive with two strikes, and striking a better balance between patience and aggression.

“I want my cake, and [to] eat it as well,” he quipped, a devilish smile on his face.

“I’d be shocked,” he added, “if we don’t see a different offensive output from here forward, starting today.”

The change started in the first inning, with the Dodgers putting Padres starter Nick Pivetta under immediate stress.

Shohei Ohtani drew a five-pitch leadoff walk. Mookie Betts shortened up his swing on an 0-and-2 slider to line a single up the middle. Freeman loaded the bases by grinding out a full-count free pass.

It was a string of small victories that provided cleanup hitter Teoscar Hernández the perfect chance to slug.

Hernández tried to, getting a fastball over the plate in a 3-and-1 count and launching a deep fly ball that seemed destined to be a grand slam. The drive, however, hung up just enough for Ramón Laureano to rob it at the wall.

The sacrifice fly brought in the Dodgers’ only run of the inning — giving them a 1-0 lead that would soon be erased on Elias Díaz’s two-run homer in the third off Yoshinobu Yamamoto (the only runs he allowed in a six-inning start).

Dodgers starting pitcher Yoshinobu Yamamoto delivers against the Padres in the first inning Sunday.

(Sean M. Haffey / Getty Images)

Still, it set the tone for a flurry of offense that would follow, when a weekend of non-existent offense finally started to turn.

“Getting the guys on and scoring in that first inning was huge,” Freeman sad. “Even though we could have got more out of it, just getting one run across was a good boost for us coming off the last couple games.”

In the sixth, Freeman hit his first home run of the day, crushing another center-cut fastball from Pivetta to right-center for a tying blast.

Then, against Padres reliever Jeremiah Estrada in the seventh, the club put all the pieces together in a five-run rally.

Andy Pages rolled a single through the left side to lead off. Michael Conforto came up next, fouled off a full-count slider, then took a borderline fastball at the top of the zone for a stress-inducing walk.

Miguel Rojas couldn’t get a bunt down after that, eventually swinging away for a fly out to center.

But, in what was easily his best moment of a trying rookie season, Rushing connected on the fatal blow seven pitches later — resetting after a bad first strike call, fouling off his own two-strike slider to keep the at-bat alive, then clobbering another slider to right for his go-ahead three-run homer.

“When I’m in the box and I get put in a hole, it’s almost like, ‘All right, I’m going to find my way out,’” said Rushing, who entered the day batting just .184 with two home runs. “I kind of played the game with him. He threw every pitch that he had, and I was totally banking on just being able to put a good swing on the ball whatever he threw.”

“I think today,” Roberts added, “was a big step in the right direction for him.”

The same, of course, was true of the Dodgers’ entire offense — which also got a second homer from Freeman later in the seventh, then another when Ohtani belted his 45th homer of the season in the ninth.

They got back to doing the little things right. They reeled off one big swing after another as a result.

“Today was more indicative of what we’re going to do, we expect, going forward,” Roberts said. “The fight, the grind, taking what the pitcher is giving you — and then if there’s slug there, it’s there. Just the byproduct of good at-bats all day.”