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Everybody is somebody else's weirdo.
What is a torpedo bat? How much does it help hitters? Inside MLB's next big thing
After the Yankees' home run barrage with bats that look like bowling pins, the innovation is sweeping baseball.
What is a torpedo bat? Inside MLB's next big thing
EARLY IN THE 2023 season, Aaron Leanhardt started asking New York Yankees hitters what they needed to perform better. He was a minor league hitting coordinator for the team, and with league-wide batting average the previous year at its lowest point in more than a half-century, Leanhardt approached that spring with a specific question: How, in an era ruled by pitching, could offense keep up?
"Players were frustrated by the fact that pitching had gotten so good," Leanhardt said.
An MIT-educated physics professor at the University of Michigan for seven years, Leanhardt left academia for athletics specifically to solve these sorts of problems. And as he spoke with more players, the framework of a solution began to reveal itself. With strikeouts at an all-time high, hitters wanted to counter that by making more contact. And the easiest way to do so, Leanhardt surmised, was to increase the size of the barrel on their bat.
Elongating the barrel -- the fat part of the bat that generates the hardest and most contact -- sounded great in theory. Doing so in practice, though, would increase the weight of the bat and slow down swing speed, negating the gains a larger sweet spot would provide.
Leanhardt started to consider the problem in a different way. Imagine, he told players, every bat has a wood budget -- a specific amount of weight (usually 31 or 32 ounces) to be distributed over a specific length. How could they invest a disproportionate amount of that budget on the barrel without throwing off the remainder of the implement?
The answer led to what could be the most consequential development in bat technology since a generation ago when players forsook ash bats for maple. The creation of the bowling pin bat (also known as the torpedo bat) optimizes the most important tool in baseball by redistributing weight from the end of the bat toward the area 6 to 7 inches below its tip, where major league players typically strike the ball. Doing so takes an apparatus that for generations has looked the same and gives it a fun-house-mirror makeover, with the fat part of the bat more toward the handle and the end tapering toward a smaller diameter, like a bowling pin.
The bat had its big debut over the weekend, as the Yankees tied a major league record with 15 home runs over their first three games. Nine of those came from five Yankees who adopted the bowling pin style: Jazz Chisholm Jr. (three), Anthony Volpe (two), Austin Wells (two), Cody Bellinger (one) and Paul Goldschmidt (one). The hullaballoo over the bats started almost immediately after Yankees announcer Michael Kay noted their shape on the broadcast, and by the end of the weekend players around the league were inquiring to bat manufacturers about getting their hands on one.
The Yankees' barrage of long balls permeated beyond players' fascination and into the zeitgeist. Some fans and even opposing players wailed fruitlessly about the legality of the bats -- Brewers reliever Trevor Megill called the bats "like something used in slow-pitch softball" after watching his teammates surrender home run after home run over the weekend. But the bats abide by Major League Baseball's collectively bargained bat specifications for shape (round and smooth), barrel size (no larger than 2.61 inches in diameter) and length (a maximum of 42 inches). Most also didn't realize that the bowling pin bat was used for some of the most consequential hits of 2024 thanks to one of its earliest adaptors.
Yankees slugger Giancarlo Stanton is owed as much credit as any player for the bowling pin revolution. Leanhardt's logic behind the bat's geometry made sense to Stanton, whose average bat velocity of 81.2 mph last year was nearly 3 mph ahead of the second-fastest swinger and more than 9 mph quicker than the average MLB swing. Even with outlier metrics, Stanton gladly embraced a bat that could make his dangerous swing even better -- and used it while pummeling seven home runs in 14 postseason games.
TO UNDERSTAND HOW the bowling pin bat works is a lesson in physics. Take a sledgehammer and a broom handle. The sledgehammer will be more difficult to swing because much of its weight is distributed to the tip. The broom handle, meanwhile, can be swung with immense speed but doesn't contain significant mass. If the length and weight of bats are constants, the distribution of mass is the variable -- and Leanhardt conceived of a bat that optimizes both so it can do the most damage.
"This bat is just trying to say: What if we put the mass where the ball is going to hit so that we have an optimized equation of mass and velocity?" said Scott Drake, the president of PFS-TECO, a Wisconsin-based wood products laboratory that inspects all MLB bats to ensure they're within the regulations. "You're trying to take a sweet spot and put more mass with that.
"Wood is highly variable," he added, "and everything is a trade-off."
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