Meet University of Michigan grad responsible for ‘torpedo’ bat craze taking over Major League Baseball

The former University of Michigan physics professor coached with the New York Yankees last season

NEW YORK, NEW YORK - MARCH 27: Paul Goldschmidt #48 of the New York Yankees at bat with a torpedo bat against the Milwaukee Brewers at Yankee Stadium on March 27, 2025 in New York City. New York Yankees defeated the Milwaukee Brewers 4-2. (Photo by Mike Stobe/Getty Images) (Mike Stobe, 2025 Getty Images)

ANN ARBOR, Mich. – As the Major League Baseball season begins, fans are energized about their teams’ chances of making a run for the World Series.

With 30 teams in the league, not all have realistic expectations of winning a title this season.

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The usual contenders are the defending champion Los Angeles Dodgers, the Detroit Tigers, the Boston Red Sox, the Philadelphia Phillies, the Texas Rangers, the Atlanta Braves, the Houston Astros, and the New York Yankees.

Major League Baseball teams2025 World Series Odds
Los Angeles Dodgers+240
Atlanta Braves, New York Yankees+900
Philadelphia Phillies+1100
New York Mets+1200
Baltimore Orioles+1600
Boston Red Sox, Houston Astros+1800
Texas Rangers+2200
Arizona Diamondbacks, Chicago Cubs, Detroit Tigers, Minnesota Twins, Seattle Mariners, San Diego Padres+3000
Cleveland Guardians+3500
Kansas City Royals+4000
Milwaukee Brewers, Tampa Bay Rays+5000
Toronto Blue Jays+6600
Cincinnati Reds, San Francisco Giants+8000
Pittsburgh Pirates, St. Louis Cardinals+12500
Athletics, Washington Nationals+20000
Los Angeles Angels+25000
Chicago White Sox, Colorado Rockies, Miami Marlins+50000

The Yankees, in particular, have been making headlines after a strong start, scoring 36 runs in their first three games against the Milwaukee Brewers.

NEW YORK, NEW YORK - MARCH 29: Paul Goldschmidt #48 of the New York Yankees at bat with a torpedo bat against the Milwaukee Brewers at Yankee Stadium on March 29, 2025 in New York City. New York Yankees defeated the Milwaukee Brewers 20-9. (Photo by Mike Stobe/Getty Images) (2025 Mike Stobe)

During the three-game series, the Yankees drew attention by hitting 15 home runs and recording 35 RBI.

This impressive feat tied an MLB record, thanks in part to their new “Torpedo Bat,” introduced by Aaron Leanhardt, a former University of Michigan physics professor who coached with the Yankees last season.

The uniquely shaped bats, resembling bowling pins, have stirred excitement in the baseball community, primarily since four of the Yankees’ nine batters used the Torpedo Bat during the opening week of the 2025 season.

Leanhardt’s journey to the majors began as a minor league hitting coordinator with the Yankees before he transitioned to a field coordinator role with the Miami Marlins in the 2025 offseason.

While with the Yankees, Leanhardt sought feedback from players on how to enhance the team’s offense.

NEW YORK, NEW YORK - MARCH 29: Austin Wells #28 of the New York Yankees hits a home run on a torpedo bat in the first inning against the Milwaukee Brewers at Yankee Stadium on March 29, 2025 in New York City. (Photo by Mike Stobe/Getty Images) (2025 Getty Images)

The consensus was clear: players needed to make contact with the barrel of the bat more consistently.

Leveraging his physics background, Leanhardt and his team adjusted the weight distribution of the bats, moving some weight from the end toward the thicker part of the bat, which is crucial for generating solid contact.

The Michigan Wolverines graduate told players that every bat has a wood budget, typically around 31 or 32 ounces, which must be distributed over a specific length.

The redesigned bat shifted weight from the tip toward the area six to seven inches below the barrel of the bat, where major leaguers commonly make contact.

This adjustment made the thicker part of the bat closer to the handle, tapering toward a smaller diameter, similar to a bowling pin.

Players for the Yankees using the Torpedo Bat include Jazz Chisholm Jr., Anthony Volpe, Austin Wells, Cody Bellinger, and Paul Goldschmidt.

Other players across the league have also adopted this innovative bat, including Adley Rutschman (Baltimore Orioles), Jose Trevino (Cincinnati Reds), Dansby Swanson (Chicago Cubs), Nico Hoerner (Chicago Cubs), Ryan Jeffers (Minnesota Twins), Francisco Lindor (New York Mets), Junior Caminero (Tampa Bay Rays), and Davis Schneider (Toronto Blue Jays).

As the excitement around this new bat technology grows, it will be interesting to see how many players continue to use Leanhardt’s creation by the time of the MLB All-Star break.


About the Author
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Brandon Carr is a digital content producer for ClickOnDetroit and has been with WDIV Local 4 since November 2021. Brandon is the 2015 Solomon Kinloch Humanitarian award recipient for Community Service.