THE CHEAP SEATS with STEVE CAMERON: If Kelenic brings this swing to Seattle for the summer ...

Yes, it’s spring training.

Yes, there are some struggling minor league pitchers out there once in a while.

Yes, it’s Arizona and the ball carries in the thin desert air.

Those are all legitimate caveats when a player hits a few bombs in March.

It doesn’t mean he’s the next Aaron Judge.

On the other hand …

When Jarred Kelenic took an easy swing and launched a home run to dead center that landed 446 feet from home plate, it was worth noticing.

Even more eye-catching, perhaps, was Kelenic fouling off four 0-2 pitches from a left-hander —then barreling up a fastball on the outside corner and sending another homer off to straightaway left field.

Sure, we all know there have been flashes of excitement from Kelenic, who has had moments over his first two years in the big leagues.

Just not enough of them, obviously, since JK’s overall batting line is .168/.251/.589 over exactly 500 at-bats.

Kelenic, who is a bundle of energy and aggression — the classic young player trying TOO hard —also has struck out 167 times, a number that seems to rise in critical situations.

AND YET …

The Mariners’ brain trust — vice-president Jerry Dipoto, GM Justin Hollander and manager Scott Servais — all feel confident that Kelenic has put those self-inflicted demons behind him.

They won’t make any exact predictions, but down deep they believe that JK is ready to explode this season.

“He has all the physical tools,” Dipoto said. “People forget that he’s only 23. He’s younger than both quarterbacks (Stetson Bennett and Max Duggan) who played in last year’s college football championship game.”

Kelenic worked all winter on a shorter, more controllable swing — along with a stance that allows him to stay relaxed in the box.

His four home runs this spring (in 17 at-bats) have come on easy swings that let him keep his head and shoulder steady on the ball – which absolutely jumps off his bat.

MLB Network insider Jon Morosi has watched this version of Kelenic, and announced that he’s become a believer.

“A couple things I noticed,” Morosi said.

“No. 1, he looks to me to be more balanced and quieter at the plate.

“The other part is, I think the new MLB pitch clock rule is going to help him.

“I think that the less time he spends thinking and analyzing and reflecting in between pitches, the better he’s going to play.

“When he just lets his natural talent take over, you’ve seen it. He basically hit two carbon copy shots to center and right center (on Feb. 26) that, really, he just handled well.

“It didn’t look like he had to stress or strain to hit the ball out of the ballpark. He just put together a really good swing twice, and the ball went.”

That’s the Jarred Kelenic we haven’t seen for more than a week at a time in Seattle.

NEEDLESS to say, if Kelenic busts out and lets his skills take over this season, the Mariners’ lineup would look dramatically different.

Servais has said that they intend to make things as easy for Kelenic as possible early in the season, platooning him in left field with veteran AJ Pollock.

“We don’t want Jarred to put any more pressure on himself than necessary,” Servais said. “We just want him to go out there and play baseball.

“We think his tools will speak for themselves.”

Of course, Kelenic has to hit if this plan is going to be a success.

But …

If you’re a Mariners fan and you’ve watched JK trying to hit 800-foot home runs the past two years, I have a suggestion.

Watch some tape of his swing this spring.

BESIDES the fact that he’s relaxed and appears “quiet” at the plate, the eye test will tell you plenty when you watch him swing.

He doesn’t wind the bat around his head to trigger a swing, for one thing, but the thing you notice most is that his follow-through is much shorter than in the past.

He’s not rolling over on pitches and grounding them to the right side.

Nope, everything is geared toward hitting the ball toward center and right-center field.

The combination of being relaxed at the plate and adjusting his swing makes it look for all the world like Kelenic — who has tremendous strength — could finally become a key for the Mariners offense.

So, now …

He just has to bring that swing to Seattle.

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Steve Cameron’s “Cheap Seats” columns appear in The Press four times each week, normally Tuesday through Friday unless, you know, stuff happens.

Steve suggests you take his opinions in the spirit of a Jimmy Buffett song: “Breathe In, Breathe Out, Move On.”