A cutter (or cut fastball) is a fastball with a small, late sideways move toward the pitcher's glove side. It sits between a fastball and a slider: thrown at near-fastball speed with close-to-fastball arm action, but with just enough late movement to miss the barrel and jam hitters. For a young pitcher, the key point is timing: a cutter is an advanced, later pitch, one to add once he already commands a fastball and a changeup and is older and more developed, not an early-arsenal pitch. Master the basics first. The cutter is a weapon for a pitcher who's built the foundation, not a shortcut for one who hasn't.
The cutter has become one of the most talked-about pitches in baseball, and naturally kids want to throw what the big leaguers throw. So it's a fair question: what exactly is a cutter, and should your young pitcher be throwing one? Here's the plain version of what it is and where it fits, which, for a young pitcher, is later than most people think.
“A cutter is a weapon for a pitcher who's already mastered the basics, not a shortcut for one who hasn't.”
It's a later pitch. The foundation comes first.What a cutter actually is
A cutter is a fastball with a late, subtle break. Thrown with nearly the same grip and arm action as a regular fastball, it comes in at close to fastball speed but darts a few inches toward the pitcher's glove side right at the end, just enough to catch the edge of the bat instead of the sweet spot. That's its whole job: it looks like a fastball, then moves a touch at the last second. It sits on the spectrum between a straight fastball and a true breaking ball.
Cutter vs fastball vs slider
It helps to see where it lands compared to the pitches around it.
| Movement | Speed | |
|---|---|---|
| Four-seam fastball | Straight | Fastest |
| Cutter | Small, late glove-side cut | Just below the fastball |
| Slider | Bigger sweeping break | Slower than a cutter |
So a cutter is the subtle one: more movement than a fastball, far less than a slider, and faster than a slider. That little late cut is what makes it effective, it's hard for a hitter to square up a pitch that looks straight until the last moment.
What it does well
Misses the barrel
The late cut moves the ball off the sweet spot, producing weak contact, jam shots and broken bats rather than needing a swing-and-miss.
Looks like a fastball
Because it's thrown with near-fastball speed and arm action, the hitter reads fastball and doesn't adjust until it's too late.
Gives a different look
For an advanced pitcher, it adds a third dimension between his fastball and his offspeed, keeping hitters from sitting on one thing.
Should a young pitcher throw one?
Here's the honest answer: not yet, for most. A cutter is an advanced, later addition, and the reasons are the same ones that run through all of pitch development. First, command comes before movement, a young pitcher's job is to own his fastball and changeup, and a located fastball beats a cutter he can't control, our guides on what pitches to learn and how many pitches he needs cover that order. Second, it's a pitch for a more developed arm and a pitcher who's past the basics, generally the mid-teens and beyond, after the fastball and changeup are genuinely reliable. Adding movement pitches early tends to pull focus away from command and can mean chasing break before the foundation is there. It fits the same patient timeline as the breaking balls, our guide on throwing a slider lays out that reasoning.
The bottom line
A cutter is a fastball with a small, late glove-side move, sitting between a fastball and a slider, thrown hard with fastball-like action to miss barrels and jam hitters. It's a genuinely effective pitch, for a pitcher who's ready for it. For a young one, that means later: command the fastball and changeup first, get older and more developed, and add the cutter once the foundation is solid. It's a weapon built on top of the basics, not a replacement for them. Two pitches he commands beat a trendy third he doesn't.
Whatever pitches a young pitcher throws, they all ride on the same delivery, and command comes from a motion he can repeat. Film one pitch from the side and upload it, and we'll break down his mechanics frame by frame and show you what's driving his command, so the foundation is strong enough to someday add a pitch like the cutter.
Build the command foundation every pitch is built on
Upload one video and we'll break down his delivery frame by frame and show you what to work on. Free. For any pain, always see a doctor first.
Start the Free Evaluation →Takes about 2 minutes · See a sample analysis firstCommon questions
What is a cutter pitch?
A cutter, or cut fastball, is a fastball with a small, late break toward the pitcher's glove side. It's thrown at close to fastball speed with nearly fastball arm action, but moves a few inches at the last second, just enough to miss the barrel. It sits between a straight fastball and a slider: more movement than a fastball, much less than a slider, and faster than a slider.
What is the difference between a cutter and a slider?
A cutter has a small, late, subtle cut and is thrown close to fastball speed with fastball-like arm action, while a slider has a bigger, sweeping break and is noticeably slower. The cutter is meant to look like a fastball and dart just enough to miss the barrel, whereas a slider is a true breaking ball designed to get swings and misses with more movement. The cutter sits between a fastball and a slider.
Should a young pitcher throw a cutter?
Generally not early. A cutter is an advanced, later pitch, best added once a pitcher already commands his fastball and changeup and is older and more developed, usually the mid-teens and beyond. Command comes before movement, and a located fastball beats a cutter a young pitcher can't control. Master the basics first, then consider adding a cutter once the foundation is genuinely solid.
Is a cutter hard on a young pitcher's arm?
A cutter is thrown with arm action closer to a fastball than a true breaking ball, so it's often considered less stressful than a slider or curveball. That said, it's still an advanced pitch that belongs later in development, after the fastball and changeup are commanded and the pitcher is more mature. Adding any new pitch too early tends to pull focus from command, and workload and mechanics remain the bigger arm-health factors. Any arm pain means see a doctor.
What age should a pitcher learn a cutter?
There's no fixed age, but a cutter fits the mid-teens and beyond for most pitchers, once they genuinely command a fastball and changeup and have developed physically. It's in the same later tier as breaking balls in terms of timing. The guiding rule is readiness, not a birthday: the fastball and changeup should be reliable first, and the pitcher should be past the stage where command is still the main project.
Upload one video. See his delivery frame by frame. Free.
We'll show you exactly where his mechanics are costing him, and what to work on first.
Get His Free Evaluation → How it works · Sample analysis