Petco Park isn’t a fun place to visit for many big leaguers who are paid to hit home runs.

They’d rather play golf in San Diego than attempt to go long in the East Village.

Kyle Schwarber stands as a stunning exception to the San Diego ballpark’s home-run suppressing history.

A Phillies slugger who loves the downtown ballpark as much as any pitcher does, Schwarber reunited with his beloved cross-country locale Monday and homered in his first at-bat, sending the Padres toward a 3-0 defeat.

“It’s just weird,” Schwarber said. “I don’t know. It’s coincidental.”

Schwarber’s full-count liner off Griffin Canning made it 10 home runs in just 85 regular-season at-bats in San Diego.

At Petco, most Padres hitters don’t hit 10 homers across multiple seasons combined. Few big leaguers could’ve authored Shwarber’s first-inning drive, which boosted his majors-best homer total to 21.

Canning’s changeup caused him to lunge, reducing the No. 2 hitter’s ability to apply leg power.

But the 5-foot-11, 229-pounder still packed a punch with his hands.

He lined the knee-high, outer-third pitch beyond ex-Phillies teammate Nick Castellanos and the right-field wall.

“He’s a little bit of a different kind of animal,” said Phillies manager Don Mattingly, a star hitter in his time with the Yankees.

“That swing was pretty epic, and the boys needed it,” said teammate Brandon Marsh, who hit a two-run homer in the seventh off Canning’s 97th and final pitch.

San Diegans have grown accustomed to Schwarber making the ball get small in a hurry here.

Almost anyone who was at Petco Park four Octobers ago will remember the 488-foot shot Schwarber slammed off Yu Darvish’s cut fastball, as part of Philadelphia’s 2-0 win in Game 1 of the National League Championship Series.

The longest homer in the ballpark’s 23-year history, it flew into the upper deck.

Does Schwarber think of that moonshot when he returns to the batter’s box here?

“It’s always fun to kind of look up there, now that you’ve done it,” he said.

“But,” he added, “you realize that’s kind of far.”

“The biggest thing,” he said later, “is always to just kind of stay in the moment.”

Further differentiating Schwarber from most big league stars is that lefty sluggers, in particular, have found Petco Park overly punitive.

Even Giants great Barry Bonds, who played his home games in San Francisco’s massive bayside ballpark when Petco opened in 2004, objected to how large the venue played.

“It’s not baseball,” Bonds said.

Back then, Petco Park played as large as Yellowstone Park.

In recent years, batted balls have carried much better in the East Village, and the shrinking of right field in 2012 has resulted in drives like Schwarber’s on Monday becoming home runs.

Mattingly, a lefty who homered in eight consecutive games for the Yankees and managed the Dodgers in several games in San Diego, said he always regarded the East Village venue as a “pretty good hittin’ park” but said the “cool air” can deaden drives.

Phillies lefty slugger Bryce Harper fell victim to the late-game atmospherics on Monday, seeing his well-struck blow stall out, enabling Jackson Merrill to catch it near the wall. Harper was both stunned and furious.

Schwarber, 32, said that early in his career, trips to the West Coast took “a little bit of getting used to.”

But he soon found out Petco and he were a match.

“It fits the eye,” he said.

Unfortunately for the Padres and their fans, Schwarber has spent his career on other National League teams.

He said Monday that in his first trip into free agency, “there were calls” between his representation and the Padres.

“It didn’t come to fruition,” he said.

Instead, the Phillies signed him to a four-year, $79 million contract in March 2022.

Last offseason, when the Padres weren’t big spenders, the Phillies signed him to a five-year, $150 million contract.

Having seen him homer in seven of his past 13 games here, the Padres would rather Schwarber visit the zoo or the golf course than the ballpark.

“I’ve heard there’s good San Diego golf here, too,” he said, adding that Torrey Pines “isn’t a bad spot to golf.”

He probably birdies the par-5s.