Say goodbye to the juiced balls and say hello to the "torpedo" bats for this season's home run surge theory.

For the uninitiated, the New York Yankees made headlines this past weekend after the team hit a staggering 15 home runs during the season-opening weekend against the Milwaukee Brewers. This kind of offensive power had everyone asking where it suddenly came from, and immediately fans started pointing to some of the player's so-called "torpedo" bats.

Cody Bellinger, Austin Wells, Jazz Chisholm Jr., Anthony Volpe and Paul Goldschmidt are among the Yankee players using the not-so-newly-designed bats, and nine of the Yankees' 15 home runs were hit by players using "torpedo" bats.

So, what are "torpedo" bats? You basically take the weight of the barrel and move it towards the middle of the bat, which makes the bat look like a giant, long bowling pin. These bats are custom-made for each player, so each bat is different and specially made so that the thickest part of the bat is where the player usually hits from.

The Yankees are not the only team using these bats. The Minnesota Twins (catcher Ryan Jeffers), New York Mets (shortstop Francisco Lindor), and Baltimore Orioles (catcher Adley Rutschman) are among those who also use them.

In fact, Bellinger used this kind of bat when he played for the Chicago Cubs, but they're only now generating a ton of buzz after the Yankees exploded for a staggering 36 runs this weekend.

There's been so much buzz surrounding the bats -- and questions about its legality -- Chisholm Jr. felt compelled to vehemently defend the bat design.

"Okay explanation the barrel is bigger and within mlb regulation!" he tweeted , "For the idiots that say it's moved to the label you're an idiot! Nobody is trying to get jammed you just move the wood from the parts you don't use to the parts you do! You're welcome no more stress for y'all!"

Chisholm Jr. is right, the bats are legal, and Major League Baseball has since shared its stance on the bats and the legality.

According to MLB.com , the league confirmed their legality on Sunday saying that the bats do not violate MLB rules or bat supplier regulations, as Rule 3.02 states bats cannot be more than 2.61 inches in diameter and 42 inches in length.

But just because these "torpedo" bats have been around and gaining steam this season doesn't mean that everyone is on board. In fact, some players thought the bats, which objectively look hilarious compared to traditional bats, were a joke.

"I thought it was a joke at first," said San Diego Padres infielder Xander Bogaerts. "You know how you can edit pictures these days. But I saw Chisholm had homered. I'd never seen it. Never heard of it. I thought they edited the picture, because I've never seen anything like that."

According to sports personality Joe Pompliano, Aaron Leanhardt is the mastermind behind the so-called torpedo bats. Leanhardt earned a PhD from MIT and then worked on a NASA-funded research team before becoming a physics professor at Michigan for nearly a decade. At 40, Leanhardt left the academia world and went into baseball before ultimately becoming a minor league coach for the Yankees.

"Leanhardt then got moved to the big league club and was responsible for bridging the gap between the analytics department and the players by translating complex analytical data into actionable insights," Pompliano tweeted .

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