Archive file · Specimen No. 02
It looks exactly like the fastball and arrives a beat slower. It wrecks a hitter’s timing.
Open this like an archive drawer: grip first, source attached, shape in words, no invented spin or movement numbers. The file exists so the hold can keep moving forward.
Holds flat · arm-side run
It runs toward the throwing hand and tumbles under the barrel, late and on the arm-side. The fade is real and the drop is real; how wide it runs depends on how hard the arm turns the axis over.
ShapeOfficial dataThe thumb and index finger form an OK circle against the inner side of the ball while the other three fingers lay across the top. The ball rests deeper in the hand, which deadens the exit, and the off-center grip tilts the axis toward the arm for fade.
01 / At the grip bench
Four ways into the same specimen. Take them in order, or go straight to the detail you came for.
Circle changeup / Reference model
View
Hand
Keyboard: arrows switch views · F flips the hand · H lifts it
Grip geometry is schematic and shows a standard circle-change family; individual circle size varies by hand. Do not call a grip a circle change unless the thumb-index circle is visible; small hands may fit a three-finger or palm/football change better.
01 / Hold
The thumb and index finger form an OK circle against the inner side of the ball while the other three fingers lay across the top. The ball rests deeper in the hand, which deadens the exit, and the off-center grip tilts the axis toward the arm for fade.
Paraphrased from MLB.com Glossary, not quoted.
Fastball arm speed, always. More surface area and deeper hand contact take the speed off, not a slower arm.
The thumb and index finger form an OK circle against the inner side of the ball while the other three fingers lay across the top. The ball rests deeper in the hand, which deadens the exit, and the off-center grip tilts the axis toward the arm for fade.
Paraphrased from MLB.com Glossary, not quoted.
MLB.com calls the circle change the most common changeup grip: thumb and index in a circle on the inner side, the other three fingers over the rest of the ball. Held farther back in the hand, sometimes toward the palm, which is what takes the speed off.
Paraphrased from the official glossary.
Driveline cues the fade by rolling the hand over the ball or swiping its inside: the more the hand turns over, the more arm-side run. The more the axis leans toward the arm, the more the ball runs that way.
Mechanical cues paraphrased from Driveline.
The deception is the late arrival on identical arm action, so the standard cue is to keep fastball arm speed and let the grip deaden the pitch, not the throw.
The "start the swing before the pitch arrives" deception is the glossary definition; the maintain-arm-speed cue is standard and widely taught.
Grip Evidence
This is the visual grip-reference layer for Circle change. It names visible placement and Austin's own feel notes, then stops before making measured claims.
Circle Changeup · Filed from external sources · No Austin grip photo
Austin's personal grip library excludes the circle change because his hand size could not form it cleanly.
Photo-supported grip cue
No Austin grip photo is attached here. The app should not imply that these photos show Austin throwing a circle change.
Pitcher's own words
Austin says he could not throw a circle change comfortably because his hands were too small to form the grip.
Sourced public record
The existing official and cited claims stay in the page below with their original confidence labels. This photo does not upgrade or replace those sources.
Grip photo only; does not prove tracked speed, spin, shape, command, injury risk, or outcome.
See every grip in the Grip Library.
Release Room
Grip shape only matters if the release makes sense. Read pressure, thumb support, and ball depth before you read the pitch shape.
The ball sits deeper than a fastball, closer to the palm.
Main top-finger control
Keep fastball arm speed and let the deeper grip take speed off.
The arm matches the fastball; the deeper grip and loosened circle deaden the exit, not a softer throw. A slight pronation at release tilts the axis arm-side, so the ball fades toward the throwing hand and tumbles as it crosses.
Paraphrased. Maintaining fastball arm speed is a standard changeup cue echoed across MLB.com and instructional sources.
Movement
The read is shape, not a gauge. The spin words explain why it moves that way, and every prose claim still carries its source.
Shape
Holds flat · arm-side run
It runs toward the throwing hand and tumbles under the barrel, late and on the arm-side. The fade is real and the drop is real; how wide it runs depends on how hard the arm turns the axis over.
Spin words
A fastball-like backspin rotated toward the arm. The axis leans arm-side rather than pointing straight up, and the harder it leans, the harder the ball fades toward the throwing hand.
Craft read
Buried in the hand, the ball comes out slower with a little arm-side fade. The hitter has already committed to fastball timing, so the swing starts early, and the barrel passes over the top of it.
The one teaching sentence
The late arrival and the fade work because the arm action is identical to the fastball. The eyes read fastball, the swing starts on fastball timing, then the ball arrives a beat late while fading down and toward the arm, and the barrel passes over it. Take the arm speed off and the deception collapses.
Filed from the conversation
Credited posts that add a useful grip, release, history, or craft perspective to this specimen. The original provider serves every clip.
College aces show their grips
NCAA Baseball’s grip tour — Chase Dollander, Paul Skenes, Jac Caglianone and Rhett Lowder showing how they actually hold the ball.
“Take a look at these aces' pitch grips: Chase Dollander, Paul Skenes, Jac Caglianone, and Rhett Lowder.”
Embedded from TikTok; credited and never rehosted.
Master Files
Four documented changeups, four answers. The visual is our own seam schematic. What sets each version apart is in the read, not a gauge.
The textbook circle change and one of the defining changeups of his generation, a bat-missing pitch built on identical arm action and late arrival.
The bat-missing standard. Hitters chased it because the arm action read fastball and the ball was simply gone by the time the barrel arrived — the textbook everyone since has measured against.
The extreme tail, the Airbender. We show it as the outer limit of the circle grip while flagging that its movement pushes toward screwball territory.
The outer limit of the grip. His Airbender fades so hard and so late that it reads less like a changeup than a screwball — the same family, taken past where the family usually ends.
The other archetype: a high-volume shape-and-location change built for weak contact and ground balls, not empty swings, the counterweight to the bat-missers.
The ground-ball answer. His change wins on shape and location instead of a huge timing gap, beating the ball into the dirt rather than past the bat — proof a great changeup need not be a chase pitch.
The historical benchmark, and the honest one. Widely called the best changeup of its era, built on identical arm action rather than raw movement; the record shows the disguise did the work. He has his own chapter in the Craftsmen.
The deception case, fully honest. The legend was the speed drop; the more useful lesson is the disguise — same arm, same look, late arrival.
The colophon
Follow a claim back to the person or record behind it. Confidence labels distinguish firsthand accounts, analysis, and secondhand attribution; the notes preserve what remains uncertain.
108 double stitches, 216 individual · seam-informed schematic · as of the dates above
Keep following the pitch
Set another grip beside it, meet a practitioner, or add what you noticed to the conversation.
Another offspeed in the collection
The index and middle fingers are wedged to opposite sides of the ball, spread wide on the outside of the leather, wider and farther back than a forkball, with the ball coming off the inside of the fingers rather than the fingertips. Thrown with the arm action of a fastball.
Paraphrased from Wikipedia (Split-finger fastball) and corroborated by Driveline; not quoted.
The people behind the pitch
A circle changeup widely called the best of its era, built entirely on looking exactly like the fastball.
Circle changeupFollow the story →
C-11 · 2006-2020A left-handed changeup artist whose out-pitch carried him to a World Series MVP: the southpaw answer to Santana.
Circle changeupFollow the story →
Others in the offspeed
Tier 03 / Field Notes
Every pitcher fiddles. A thumb creeps lower, a seam catches more leather, a cue from a coach suddenly makes the pitch move. Pitch Atlas files those experiments as specimens with context, so the small discoveries stop disappearing into group chats and comment sections.
How notes rank
There is no single correct way to throw a pitch, but there are better and worse claims. A funny line should never outrank a tested grip. So notes do not rise on raw votes. They rise on weighted signals - provenance and adoption first.
Source tier and evidence. A coach-observed note with a link outranks an unverified hunch with none.
How many other pitchers independently tried the same tweak. Real replication, not passive clicks.
Marked useful, measured against views so a small loud crowd cannot stuff the rank.
How close a note is to your level, slot, and pace context. Computed in your session, never stored.
Considered practice: a real sample size behind the claim, not one good bullpen.
The vocabulary
Your bullpen card
0 ptsFiling as an unclaimed contributor · anonymous.
Throw the circle changeup with a wrinkle of your own? Add it. Label where it comes from: your own report, a coach, or a hunch. Keep it to grip and technique only. No medical, injury, workload, or youth-training prescriptions. Every contribution keeps its source context.
Keeping the bullpen honest
Field Notes are live for grip and technique only. No medical, injury, workload, or youth-training prescriptions. Every note carries a source and confidence label, and contributors can report problems. No abuse, no personal attacks, no off-topic spam, nothing aimed at minors. New field notes stay private until review. See a problem with a public note? Use Report on it; a note flagged by enough people is hidden automatically until it is checked.
Every community variant carries the same source and confidence labels as the records above. Nothing appears here unsourced, and no count is shown until it is real.
What did you notice? Ask about a detail, share a firsthand observation, or add a source to the conversation.
