Culture
Meet the MIT physicist turned Marlins coach behind the ‘torpedo’ bats used by the Yankees
NEW YORK — The New York Yankees’ bats were the story of the team’s franchise-record nine-home run day against the Milwaukee Brewers on Saturday. Then came the discussion about the actual bats used by some players in the 20-9 win.
The uniquely shaped lumber is the result of two years of research and experimentation with a former Massachusetts Institute of Technology physicist-turned-coach at the helm.
The question at its center?
“Where are you trying to hit the ball?” Aaron Leanhardt said in a phone interview Sunday morning. “Where are you trying to make contact?”
Leanhardt, 48, began his work when he was a member of the Yankees’ minor-league hitting department in 2022 and brought it to the major leagues last season when he was the team’s lead analyst, with some players, including shortstop Anthony Volpe, trying them in games. Now, as many as five Yankees will be using them in games at least early this season, according to outfielder Cody Bellinger.
The bats — with their torpedo-like shape — are custom-made to player preferences and are designed so that the densest part of the bat is where that particular hitter most often makes contact with the baseball, said Leanhardt, who became a field coordinator with the Miami Marlins in the offseason.
“Really,” he said. “It’s just about making the bat as heavy and as fat as possible in the area where you’re trying to do damage on the baseball.”
Anthony Volpe (holding a “torpedo” bat) congratulates Jazz Chisholm during the Yankees’ 20-9 win on Saturday. (Mike Stobe / Getty Images)
A Major League Baseball spokesman told The Athletic that the bats don’t break any rules. MLB Rule 3.02 states that a bat “shall be a smooth, round stick not more than 2.61 inches in diameter at the thickest part and not more than 42 inches in length. The bat shall be one piece of solid wood.” It also says that “experimental” bats can’t be used “until the manufacturer has secured approval from Major League Baseball of his design and methods of manufacture.”
Asked whether he was the inventor of the technology, Leanhardt said it was a group effort, the results coming from conversations with coaches, players, MLB and bat makers.
“Credit goes to those who take it,” Leanhardt said. “But if people want to ascribe credit to different people, then I’ll take some cut of it.”
A Yankees official, however, said Leanhardt deserves “a lot” of the credit. Retired infielder Kevin Smith, who spent parts of four seasons in the majors, also credited Leanhardt as the inventor.
Yes, the Yankees have a literal genius MIT Physicist, Lenny (who is the man), on payroll. He invented the “Torpedo” barrel. It brings more wood – and mass – to where you most often make contact as a hitter. The idea is to increase the number of “barrels” and decrease misses. pic.twitter.com/CsC1wkAM9G
— Kevin Smith (@KJS_4) March 29, 2025
Leanhardt took an unorthodox route to baseball.
He has a bachelor’s degree in electrical engineering from the University of Michigan and a Ph.D. in physics from MIT. He was a physics professor at the University of Michigan from 2007 to 2014.
Leanhardt began coaching in the Atlantic League in 2017 and coached at a Montana community college before joining the Yankees in 2018. In the majors in 2024, the club said he was its first “major league analyst” and “responsible for integrating the use of quantitative information with on-field performance and preparation.”
Why leave academia for baseball?
“I think that’s one of the cool things about sports is it’s very competitive,” he said. “Guys are willing to push the envelope. It’s just an opportunity to take my background to an area and find ways to innovate.”
Talking to players over the years revealed that their biggest concerns were twofold, Leanhardt said. They wanted to make more contact with pitches and they wanted to strike the ball more often with the bat’s “sweet spot,” or the densest area.
“They’re going to point to a location on the bat that is probably six or seven inches down from the tip of the bat,” he said. “That’s where the sweet spot typically is. It’s just through those conversations where you think to yourself, why don’t we exchange how much wood we’re putting on the tip versus how much we’re putting in the sweet spot? That’s the original concept right there. Just try to take all that excess weight and try to put it where you’re trying to hit the ball and then in exchange try to take the thinner diameter that used to be at the sweet spot and put that on the tip.”
Leanhardt said he didn’t see many drawbacks to redistributing the weight of the bat.
“The bat speed should stay the same,” he said. “Maybe the bat speed can even increase a little bit depending on how you want to redesign the bat. But ultimately you’re getting a fatter barrel, a heavier barrel at the sweet spot. So in some sense, you can have your cake and eat it here too. You can get some gains without actually making sacrifices.”
Leanhardt said he didn’t want to talk about individual players’ experiences with the new bat. Yankees designated hitter Giancarlo Stanton told reporters earlier this month that it was “probably some bat adjustments” last season that caused the ligament tears in both of his elbows that led to his current stay on the injured list, though he didn’t place specific blame on anybody. Then he added: “I don’t know why it happened.” Leanhardt declined to comment on Stanton’s situation.
“You’d have to ask the Yankees’ medical personnel about that,” he said. “I’ll defer all those questions to the Yankees’ medical guys.”
Leanhardt said it was “the nature of our business” that it took years for a radically new bat design to come along.
“People back in the day swung very heavy bats made out of hickory and then someone had this genius idea to swing something lighter, something like ash, and that was revolutionary back in the 1920s, ’30s, ’40s kind of in that transition, and then the industry kind of stayed the course for quite some time,” he said. “Ultimately, it just takes people asking the right questions and being willing to be forward-thinking.”
He got a kick out of seeing the social media fervor the bats caused Saturday. He said that while some players began to use them last season, “the entire industry kind of caught wind of it” and “it exploded in the offseason.”
“Which is why you see it in the hands of so many guys right now,” he said. “Obviously, (Saturday’s) performance threw a whole lot of attention to it.”
It took a lot of coordination for the bats to go from the design stage to being manufactured. Leanhardt said he would “guarantee” he’s on a first-name basis with officials at MLB who oversee bat regulation and “everyone who operates the lathe for every bat manufacturer in baseball.”
“You really just are communicating with each company and trying to find the person who really knows the wood and knows how to turn the wood on a lathe. You just build a relationship with those guys and convince them that this is something that’s in their best interest to produce for their players. They want their players to be as successful as possible. Some guys buy in and it gains traction,” he said. “That’s really how it got built up.”
(Top photo of Aaron Leanhardt, right, with Marlins manager Clayton McCullough: Jasen Vinlove / Miami Marlins / Getty Images)
Culture
What Happens When We Die? This Wallace Stevens Poem Has Thoughts.
Whatever you do, don’t think of a bird.
Now: What kind of bird are you not thinking about? A pigeon? A bald eagle? Something more poetic, like a skylark or a nightingale? In any case, would you say that this bird you aren’t thinking about is real?
Before you answer, read this poem, which is quite literally about not thinking of a bird.
Human consciousness is full of riddles. Neuroscientists, philosophers and dorm-room stoners argue continually about what it is and whether it even exists. For Wallace Stevens, the experience of having a mind was a perpetual source of wonder, puzzlement and delight — perfectly ordinary and utterly transcendent at the same time. He explored the mysteries and pleasures of consciousness in countless poems over the course of his long poetic career. It was arguably his great theme.
Stevens was born in 1879 and published his first book, “Harmonium,” in 1923, making him something of a late bloomer among American modernists. For much of his adult life, he worked as an executive for the Hartford Accident and Indemnity Company, rising to the rank of vice president. He viewed insurance less as a day job to support his poetry than as a parallel vocation. He pursued both activities with quiet diligence, spending his days at the office and composing poems in his head as he walked to and from work.
As a young man, Stevens dreamed of traveling to Europe, though he never crossed the Atlantic. In middle age he made regular trips to Florida, and his poems are frequently infused with ideas of Paris and Rome and memories of Key West. Others partake of the stringent beauty of New England. But the landscapes he explores, wintry or tropical, provincial or cosmopolitan, are above all mental landscapes, created by and in the imagination.
Are those worlds real?
Let’s return to the palm tree and its avian inhabitant, in that tranquil Key West sunset of the mind.
Until then, we find consolation in fangles.
Culture
Wil Wheaton Discusses ‘Stand By Me’ and Narrating ‘The Body’ Audiobook
When the director Rob Reiner cast his leads in the 1986 film “Stand by Me,” he looked for young actors who were as close as possible to the personalities of the four children they’d be playing. There was the wise beyond his years kid from a rough family (River Phoenix), the slightly dim worrywart (Jerry O’Connell), the cutup with a temper (Corey Feldman) and the sensitive, bookish boy.
Wil Wheaton was perfect for that last one, Gordie Lachance, a doe-eyed child who is ignored by his family in favor of his late older brother. Now, 40 years later, he’s traveling the country to attend anniversary screenings of the film, alongside O’Connell and Feldman, which has thrown him back into the turmoil that he felt as an adolescent.
Wheaton has channeled those emotions and his on-set memories into his latest project: narrating a new audiobook version of “The Body,” the 1982 Stephen King novella on which the film was based.
A few years ago, Wheaton started to float the idea of returning to the story that gave him his big break — that of a quartet of boys in 1959 Oregon, in their last days before high school, setting out to find a classmate’s dead body. “I’ve been telling the story of ‘Stand By Me’ since I was 12 years old,” he said.
But this time was different. Wheaton, who has narrated dozens of audiobooks, including Andy Weir’s “The Martian” and Ernest Cline’s “Ready Player One,” says he has come to enjoy narration more than screen acting. “I’m safe, I’m in the booth, nobody’s looking at me and I can just tell you a story.”
The fact that he, an older man looking back on his younger years, is narrating a story about an older man looking back on his younger years, is not lost on Wheaton. King’s original story is bathed in nostalgia. Coming to terms with death and loss is one of its primary themes.
Two days after appearing on stage at the Academy Awards as part of a tribute to Reiner — who was murdered in 2025 alongside his wife, Michele — Wheaton got on the phone to talk about recording the audiobook, reliving his favorite scenes from the film and reexamining a quintessential story of childhood loss through the lens of his own.
This interview has been edited and condensed.
“I felt really close to him, and my memory of him.”
Wheaton on channeling a co-star’s performance.
There’s this wonderful scene in “Stand By Me.” Gordie and Chris are walking down the tracks talking about junior high. Chris is telling Gordie, “I wish to hell I was your dad, because I care about you, and he obviously doesn’t.”
It’s just so honest and direct, in a way that kids talk to each other that adults don’t. And I think that one of the reasons that really sticks with people, and that piece really lands on a lot of audiences, and has for 40 years, is, just too many people have been Gordie in that scene.
That scene is virtually word for word taken from the text of the book. And when I was narrating that, I made a deliberate choice to do my best to recreate what River did in that scene.
“You’re just a kid,
Gordie–”
“I wish to fuck
I was your father!”
he said angrily.
“You wouldn’t go around
talking about takin those stupid shop courses if I was!
It’s like
God gave you something,
all those stories
you can make up, and He said:
This is what we got for you, kid.
Try not to lose it.
But kids lose everything
unless somebody looks out for them and if your folks
are too fucked up to do it
then maybe I ought to.”
I watched that scene a couple of times because I really wanted — I don’t know why it was so important to me to — well, I know: because I loved him, and I miss him. And I wanted to bring him into this as best as I could, right?
So I was reading that scene, and the words are identical to the script. And I had this very powerful flashback to being on the train tracks that day in Cottage Grove, Oregon. And I could see River standing next to them. They’re shooting my side of the scene and there’s River, right next to the camera, doing his off-camera dialogue, and there’s the sound guy, and there’s the boom operator. There’s my key light.
I could hear and feel it. It was the weirdest thing. It’s like I was right back there.
I was able to really take in the emotional memory of being Gordie in all of those scenes. So when I was narrating him and I’m me and I’m old with all of this experience, I just drew on what I remembered from being that little boy and what I remember of those friendships and what they meant to me and what they mean to me today.
“Rob gave me a gift. Rob gave me a career.”
Wheaton recalls the “Stand By Me” director’s way with kids on set, as well as his recent Oscars tribute.
Rob really encouraged us to be kids.
Jerry tells the most amazing story about that scene, where we were all sitting around, and doing our bit, and he improvised. He was just goofing around — we were just playing — and he said something about spitting water at the fat kid.
We get to the end of the scene, and he hears Rob. Rob comes around from behind the thing, and he goes, “Jerry!” And Jerry thinks, “Oh no, I’m in trouble. I’m in trouble because I improvised, and I’m not supposed to improvise.”
The context for Jerry is that he had been told by the adults in his life, “Sit on your hands and shut up. Stop trying to be a cutup. Stop trying to be funny. Stop disrupting people. Just be quiet.” And Jerry thinks, “Oh my God. I didn’t shut up. I’m in trouble. I’m gonna get fired.”
Rob leans in to all of us, and Rob says, “Hey, guys, do you see that? More of that. Do that!”
The whole time when you’re a kid actor, you’re just around all these adults who are constantly telling you to grow up. They’re mad that you’re being a kid. Rob just created an environment where not only was it supported that we would be kids — and have fun, and follow those kid instincts and do what was natural — it was expected. It was encouraged. We were supposed to do it.
They chanted together:
“I don’t shut up,
I grow up.
And when I look at you I throw up.”
“Then your mother goes around the corner
and licks it up,”
I said, and hauled ass out of there,
giving them the finger over my shoulder as I went.
I never had any friends later on
like the ones I had when I was twelve.
Jesus, did you?
When we were at the Oscars, I looked at Jerry. And we looked at this remarkable assemblage of the most amazingly talented, beautiful artists and storytellers. We looked around, and Jerry leans down, and he said, “We all got our start with Rob Reiner. He trusted every single one of us.”
And to stand there for him, when I really thought that I would be standing with him to talk about this stuff — it was a lot.
“I was really really really excited — like jumping up and down.”
The scene Wheaton was most looking forward to narrating: the tale of Lard Ass Hogan.
I was so excited to narrate it. It’s a great story! It’s a funny story. It’s such a lovely break — it’s an emotional and tonal shift from what’s happening in the movie.
I know this as a writer: You work to increase and release tension throughout a narrative, and Stephen King uses humor really effectively to release that tension. But it also raises the stakes, because we have these moments of joy and these moments of things being very silly in the midst of a lot of intensity.
That’s why the story of Lard Ass Hogan is so fun for me to tell. Because in the middle of that, we stop to do something that’s very, very fun, and very silly and very celebratory.
“Will you shut up and let him tell it?”
Teddy hollered.
Vern blinked.
“Sure. Yeah.
Okay.”
“Go on, Gordie,”
Chris said. “It’s not really much—”
“Naw,
we don’t expect much from a wet end like you,”
Teddy said,
“but tell it anyway.”
I cleared my throat. “So anyway.
It’s Pioneer Days,
and on the last night
they have these three big events.
There’s an egg-roll for the little kids and a sack-race for kids that are like eight or nine,
and then there’s the pie-eating contest.
And the main guy of the story
is this fat kid nobody likes
named Davie Hogan.”
When I narrate this story — whenever there is a moment of levity or humor, whenever there are those brief little moments that are the seasoning of the meal that makes it all so real and relatable — yes, it was very important to me to capture those moments.
I’m shifting in my chair, so I can feel each of those characters. It’s something that doesn’t exist in live action. It doesn’t exist in any other media.
“I feel the loss.”
Wheaton remembers River Phoenix.
The novella “The Body” is very much about Gordie remembering Chris. It’s darker, and it’s more painful, than the movie is.
I’ve been watching the movie on this tour and seeing River a lot. I remember him as a 14- and 15-year-old kid who just seemed so much older, and so much more experienced and so much wiser than me, and I’m only a year younger than him.
What hurts me now, and what I really felt when I was narrating this, is knowing what River was going through then. We didn’t know. I still don’t know the extent of how he was mistreated, but I know that he was. I know that adults failed him. That he should have been protected in every way that matters. And he just wasn’t.
And I, like Gordie, remember a boy who was loving. So loving, and generous and cared deeply about everyone around him, all the time. Who deserved to live a full life. Who had so much to offer the world. And it’s so unfair that he’s gone and taken from us. I had to go through a decades-long grieving process to come to terms with him dying.
Near the end
of 1971,
Chris
went into a Chicken Delight in Portland
to get a three-piece Snack Bucket.
Just ahead of him,
two men started arguing
about which one had been first in line. One of them pulled a knife.
Chris,
who had always been the best of us
at making peace,
stepped between them and was stabbed in the throat.
The man with the knife had spent time in four different institutions;
he had been released from Shawshank State Prison
only the week before.
Chris died almost instantly.
It is a privilege that I was allowed to tell this story. I get to tell Gordie Lachance’s story as originally imagined by Stephen King, with all of the experience of having lived my whole adult life with the memory of spending three months in Gordie Lachance’s skin.
Culture
Do You Know the Comics That Inspired These TV Adventures?
Welcome to Great Adaptations, the Book Review’s regular multiple-choice quiz about printed works that have gone on to find new life as movies, television shows, theatrical productions and more. This week’s challenge highlights offbeat television shows that began as comic books. Just tap or click your answers to the five questions below. And scroll down after you finish the last question for links to the comics and their screen versions.
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