The Yankees opened the 2025 MLB season by doing what the Yankees do when they smell blood: they turned a baseball game into a fireworks show. Nine home runs in one night, an all-time team record.
Then the internet did what the internet does: it found a weird-looking object and decided it must be the reason for everything.
Six of those nine homers, according to early coverage, were hit with an odd, bowling-pin-shaped bat that’s picked up the nickname “torpedo.” Suddenly we weren’t talking about pitching mistakes, hitter prep, or a hot lineup. We were talking about a piece of wood like it was a banned substance.
Here’s the buzzkill: the science crowd, research often cited from Washington State University, Penn State, and the University of Illinois, doesn’t see a magic wand. They see… a bat. A slightly different bat. One that might help at the margins, for certain swings, in certain spots. That’s it.
Nine homers will do that: the “torpedo” becomes the story
Nine home runs in an opener is the kind of stat that makes highlight producers call their families. But the “torpedo” detail gave the story legs, because it’s visual. A normal bat is a normal bat. This thing looks like it got lost on the way to a bowling alley.
The design is the whole point: a thicker “belly” around the area where many hitters try to square the ball up, and a more tapered end. To fans primed by years of “juiced ball” arguments and equipment controversies in other sports, it read like aggressive optimization, legal, maybe, but suspicious.
Players and coaches, predictably, tried to pour cold water on it. A bat doesn’t rescue a bad swing. And one game, especially an opener with max attention, can turn random variance into a national debate. Home run binges have happened with standard bats forever.
Still, MLB rules matter here. If a bat meets the league’s requirements on wood, dimensions, and manufacturing, it’s legal. So the real question isn’t “Is it allowed?” It’s “Does it actually help enough that MLB has to care?”
Washington State’s basic message: geometry isn’t free power
The Washington State University angle, as it’s been discussed, comes down to a simple mechanical reality: a bat’s performance depends on mass, where that mass sits, the stiffness of the wood, and how the bat rotates through the swing.
Change the shape and you can change the weight distribution. But you don’t conjure extra energy out of thin air. The energy that ends up in the ball starts with the hitter’s body and the bat speed they create, then the collision follows well-understood physics.
Two concepts keep popping up in bat talk: the “sweet spot” and the so-called trampoline effect. With wood, the trampoline effect is limited, this isn’t a metal bat situation. The sweet spot is the zone where the bat stings less and transfers energy more cleanly.
A bulged profile could help some hitters find that zone a little more often. That’s not “more power.” That’s “less punishment when you’re a hair off.” Big difference.
Inertia, trade-offs, and why one guy’s miracle bat is another guy’s paperweight
Researchers also focus on moment of inertia, how hard the bat is to start and stop during a swing. Put more mass closer to the hands and the bat can feel quicker, potentially boosting bat speed for the same effort. Push mass outward and you might get a heavier “thump,” but the bat can feel slower.
The torpedo shape is a compromise in that tug-of-war. It redistributes wood, but it doesn’t rewrite the laws of motion. And hitters aren’t robots: what feels “fast” or “whippy” to one guy can feel like swinging a fence post to the next.
That’s why the physics-minded conclusion is so unsexy: any gains are likely small, often smaller than what you can confidently tease out of a single game’s stats.
Yes, in baseball, a tiny bump in exit velocity can be the difference between a warning-track out and a cheap homer. But that bump depends on the hitter-bat pairing, not some universal super-bat that turns everyone into peak Barry Bonds.
Penn State and Illinois: the real benefit is “forgiveness,” not max power
The Penn State and University of Illinois work that gets referenced in these conversations sits in the broader world of sports-collision research: measure what changes when you tweak geometry and mass distribution, then look at outputs like exit velocity, stability at impact, and how badly mishits get punished.
The public argument often mashes two ideas together: more power vs. more consistency. A bat can fail to raise a hitter’s absolute ceiling while still helping them on slightly off-center contact. For certain hitters, especially the ones who already hit rockets but don’t always barrel it perfectly, that “forgiveness” can turn a few near-misses into loud contact over a series of games.
Over a season, that can matter. Over one night, it can look like sorcery.
And the labs also reinforce the obvious thing fans forget: bats are personal. A profile that works for one Yankee might feel wrong for the next. MLB teams already have deep menus of custom shapes, handles, and balance points. The torpedo is another option in a very crowded catalog.
MLB’s wood-bat rules are tight, this fight is mostly cultural
MLB requires wood bats and sets constraints meant to protect the sport’s identity and keep equipment from turning into an arms race. Innovation still happens, but it’s usually incremental: barrel profiles, handle shapes, balance tweaks, different wood species.
The torpedo doesn’t change the material. It changes the silhouette. And in baseball, silhouette matters. A classic cylinder looks “right,” so nobody panics. A bowling-pin bat looks like a loophole, so everyone does.
Teams, chase marginal gains like it’s their job, because it is. If a bat helps a player turn a handful of mediocre contacts into dangerous ones, that’s runs over 162 games, even if you can’t isolate the cause with courtroom certainty.
But pinning the Yankees’ nine-homer night on one piece of lumber is the kind of tidy story sports fans love, and reality usually ruins. One game is a tiny sample. Pitch selection, pitcher quality, weather, scouting, and plain old hot streaks can all swamp whatever the bat is doing.
For MLB, the real job is keeping trust intact. If the bats are within spec and independent analysis doesn’t show a massive, repeatable advantage, the torpedo probably stays what it is right now: a curiosity that looks scandalous on TV.
FAQ: Is the “torpedo” bat legal in MLB?
Yes, so long as it meets MLB’s rules for wooden bats, including material and dimensional requirements. The argument is about whether it offers a meaningful advantage, not about a current ban.
