In a month where it has felt like too many things have gone wrong for the Yankees, a lot sure looked right on Sunday.

Former Patchogue-Medford star Marcus Stroman returned to the starting rotation after 2½ months because of a knee injury and turned in five excellent innings. Aaron Judge, who entered Sunday in a 10-for-55 (.182 avg) skid over his previous 15 games, hit a pair of home runs — his 29th and 30th — and drove in four. And the lineup that’s been largely responsible for a very middling June, had nine hits and pushed across a dozen runs.

“I never really worry about him,” manager Aaron Boone said of Judge.

Those positives all added up to the Yankees' 12-5 victory over the A's in the rubber game of their three-game series before 42,166 at the Stadium.

The Yankees (48-35) have won three of their last four games as they head to Toronto to start a four-game series that begins Monday night. And while this hasn’t been a great month, the club is still 13 games over .500 — the same amount at the start of June.

“We know we're not playing our best and we're still out there at the top of the division and that gives us a huge advantage in our eyes,” Jazz Chisholm Jr. said. “We're not even playing our best and we're still up here. So we can imagine when we get back on a roll like at the beginning of the season. . . We just can't wait for that to come back.”

Chisholm is one guy who has not been middling in June. Since returning from the injured list on June 3 after missing 28 games to an oblique strain, he entered the series finale slashing .309/.367/.543 in his last 22 games with five homers and 14 RBIs. 

On Sunday against former Yankees righthander Luis Severino, Chisholm gave the Yankees a 1-0 lead in the second inning with 362-foot homer into the rightfield seats. Then in the third, he laced a three-run triple to the gap in right-center before scoring on a wild pitch to make it 5-0.

“He’s playing at a really high level,” Boone said.

“I feel like I'm back in my era [when] I was younger, just going out there and just hitting,” Chisholm said. “[I’m] just not worrying about stuff, just not worrying about my swing, not worrying about striding too far. Everything just feels good and I'm just going.”

Cody Bellinger had three hits, including a 378-foot three-run homer in the fifth that gave the Yankees a 10-1 lead. It was his first home run since June 18.

Judge struck out and walked in his first two at-bats. Then, in the fourth inning, he hit a 402-foot two-run shot into the seats in left. And in the seventh, he smashed a 426-foot blast into the visitors’ bullpen in the left-centerfield to put the Yanks up, 12-5.

“I was happy to kind of deliver there and get another two runs with the second one,” Judge said.

Stroman, who had last pitched on April 11 and has been out since with left knee inflammation, looked like his authentic self by getting seven groundball outs in the 72-pitch effort. He allowed one run — a Willie MacIver fifth-inning home run — and three hits, walking two and striking out one.

“It’s definitely good to be back,” Stroman said. “It's an incredible team that we're a part of. We can truly do some special things so [I’m] just looking to do my part.”

“You see a lot of guys who come back from injuries [that] kind of seem a little more rusty or they’ve got to work on a couple things," Judge said, "but he looked like he had 15 starts under [his] belt."

Severino did not fare well in his first game back at the Stadium in a visiting uniform. He allowed seven runs (six earned) and five hits in 3 2/3 innings, walking three and hitting two batters. Severino also threw two wild pitches.

JT Brubaker replaced Stroman and faced the first seven batters in the A’s sixth. The righthander recorded only one out as the Athletics used a double, a single, three walks and a hit batter to make it 10-4. Jonathan Loaisiga, who entered with the bases loaded and one out, gave up a run-scoring groundout before escaping the jam without further damage.

Tim Hill, Ian Hamilton and Luke Weaver followed Loaisiga by each tossing a scoreless inning.

Ben Rice got his third start at catcher, his natural position before the organization had him begin playing first base. He was only told the day before, but he said, “I do all the catching work before the series — study their hitters and how they're going to match up against [us] — so getting ahead of it makes [short notice] a little more manageable.” Boone said that Rice has handled the responsibilities well, adding, “in some ways, I haven't noticed him — like in a good way.” . . . Anthony Volpe, upset about a check swing after his eighth-inning strikeout, was ejected by first-base umpire Chad Fairchild after throwing his helmet.