Hold
Firm but free — the ball has to roll from the side, not be muscled down.
Specimen No. 08
Sweeper
A slider grip turned around the side of the ball, so it sweeps wide and flat to the glove side instead of biting late.
Shape read
Drops · glove-side sweep
A wide, mostly flat sweep to the glove side. It neither rides like a four-seam nor tumbles like a curve — almost all of its movement runs sideways, with little drop beyond gravity. It looks like a fastball, then runs off the plate well before it arrives.
ShapeReputable analysisA slider grip rotated further around the side of the ball. The index and middle fingers sit toward the outer third, the hand "gets around" the ball at release rather than cutting down through it, and a wider arm path lets the fingers sweep across the outside. That tilts the spin axis toward pure sidespin.
BreakingThe wide oneMagnus: glove-side sweep
GripReputable analysisGrip Lab
Hold it like this
Lead with the hand. The fingers on the ball below are the sourced contacts, solved onto the seam — drag the ball, or use the view buttons.
Reputable analysisMLB.com Statcast Glossary, Sweeper (ST)
View
Hand
Keyboard: arrows switch views · F flips the hand · H lifts it
- 01Start from your slider grip: index and middle on the outer third of the ball.
- 02Rotate your hand further around the side, so you are getting around the ball, not on top of it.
- 03Use a slightly wider arm path and let the fingers sweep across the outside at release.
- 04Throw it with fastball intent; the wide break comes from the sidespin, not from muscling it.
What it should feel like
Stay on the side of the ball and sweep your fingers around the outside, like spinning a frisbee. Not a downward pull.
Grip geometry is schematic and shows the side-spin family; spiked and two-seam sweeper grips shift the finger posture.
Ball depth
Neutral depth
Spacing
Fingers close
The sourced grip, in full
A slider grip rotated further around the side of the ball. The index and middle fingers sit toward the outer third, the hand "gets around" the ball at release rather than cutting down through it, and a wider arm path lets the fingers sweep across the outside. That tilts the spin axis toward pure sidespin.
Reputable analysisMLB.com Statcast Glossary, Sweeper (ST)
Paraphrased. MLB.com: the sweeper is thrown with side-spin, "getting around" the ball, or with a two-seam grip — the gyro slider, by contrast, is thrown with bullet spin.
MLB.com frames the sweeper grip as side-spin first: the pitcher gets around the outside of the ball, or uses a two-seam orientation, where a traditional gyro slider is thrown with bullet spin that spirals like a football.
Reputable analysisMLB.com Statcast Glossary, Sweeper (ST)
Paraphrased from the glossary entry, not quoted.
It is, mechanically, a slider family member — Driveline's slider grips, with the fingers set off-center and the ball allowed to roll from the hand, are the same starting point; the sweeper just rotates the hand further around the side for lateral spin.
Reputable analysisDriveline Baseball, How to Throw a Slider
Paraphrased. The off-center grip and let-it-slide-off cue are Driveline's; the further-around rotation is the sweeper variation.
A big-league pitcher will often carry two distinct slider grips — one for the sweeper, one for the gyro slider — and pick by intent: the sweeper to sweep a same-handed hitter off the plate, the gyro slider to bury one with a late, short bite.
Reputable analysisMLB.com, Explaining the sweeper (slider vs sweeper break)
Paraphrased. MLB.com's explainer cites a pitcher describing his two separate slider grips.
Release Room
Translate the hold into a release
Grip shape only matters if the release makes sense. Read pressure, thumb support, and ball depth before you read the pitch shape.
Pressure
Primary sidespin pressure
Leave
Sweep the fingers around the outside of the ball, like spinning a frisbee, instead of pulling straight down.
It is thrown a touch slower than a slider, with the hand staying on the side and the fingers sweeping around the outside instead of pulling down. The wide break is bought with that around-the-ball action and a spin axis tilted toward pure sidespin.
Reputable analysisMLB.com, Explaining the sweeper (slider vs sweeper break)
Paraphrased from MLB.com's sweeper explainer; the grip and feel description is in the atlas's own words.
Movement
Sidespin, not bullet spin: the Magnus force points sideways, so it sweeps wide and flat instead of biting late like a gyro slider.
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
Drops · glove-side sweep
A wide, mostly flat sweep to the glove side. It neither rides like a four-seam nor tumbles like a curve — almost all of its movement runs sideways, with little drop beyond gravity. It looks like a fastball, then runs off the plate well before it arrives.
Reputable analysisMLB.com, Explaining the sweeper (slider vs sweeper break)
Spin words
Tilted toward pure sidespin: the axis lies nearly sideways for a right-hander, almost flat across the ball, so the spin does its Magnus work across the side. That is the sweeper's whole identity and the opposite of the gyro slider, whose axis points at the catcher and spins like a thrown football.
Reputable analysisMLB.com Statcast Glossary, Sweeper (ST)
Craft read
A sweeper spins almost like a frisbee — its axis lying on its side instead of pointing at the catcher. That turns the same air force that lifts a fastball into a sideways push, so the ball sweeps a long way to the glove side and barely drops. It looks like a fastball, then runs off the plate well before it gets there.
The one teaching sentence
A gyro slider points its spin axis at the catcher and spirals like a football, so the spin makes almost no Magnus force and the pitch breaks late and short. A sweeper tilts that axis toward pure sidespin, so the same Magnus force that lifts a four-seam now pushes sideways — a wide, glove-side sweep with little drop. Same family as the slider, opposite Magnus budget.
Reputable analysisMLB.com Statcast Glossary, Sweeper (ST)
Master Files
Three ways the same pitch wins
Three reference sweepers, three ways to win with the side-spin sweep. The visual is our own seam schematic. What sets each version apart is in the read — how the arm shapes the sweep — not a gauge.
Shohei Ohtani
The reference sweeper — "maybe the best sweeper in the Majors," per MLB.com — and a study in reshaping a pitch year to year as he hunts the best shape.
The widest, most violent sweep in the game, and never the same shape two years running — he keeps recutting it, hunting more reach off the side. The benchmark every other sweeper gets measured against by eye.
Freddy Peralta
A swing-and-miss sweeper folded into a four-seam-heavy arsenal — shown because the shape is the lesson, not the sample size.
A sharp, late sweep that plays off his fastball-first look: hitters geared for the ride get the floor pulled sideways instead. The break does the work; gravity carries most of the small drop.
Reputable analysisBaseball Savant (Statcast), Freddy Peralta/ 2025
Yu Darvish
The arsenal artist: the sweeper is one shape among many he files away, thrown sparingly and precisely rather than as a primary.
One sweep among a deep deck of shapes — thrown sparingly and placed precisely, a glove-side look he reaches for to keep a hitter from sitting on anything. Craft over volume.
Reputable analysisBaseball Savant (Statcast), Yu Darvish/ 2025
The colophon
Every claim, sourced
Nothing here is marked right or wrong. It is marked by where it came from and how confident the source is. A broken citation throws at build, so a dead source never reaches you.
- 01MLB.com Statcast Glossary, Sweeper (ST)
- 02Driveline Baseball, How to Throw a Slider
- 03MLB.com, Explaining the sweeper (slider vs sweeper break)
- 04MLB.com, Shohei Ohtani's 2025 pitching debut — a Statcast breakdown/ 2025
- 05Baseball Savant (Statcast), Freddy Peralta/ 2025
- 06Baseball Savant (Statcast), Yu Darvish/ 2025
- 07Wikipedia, Baseball (ball)
- 08mathcurve.com, Seam line of a tennis ball (Ferreol / Esculier)
Official dataPitcher's own wordsCoach-observedReputable analysisSecondhand, attributed
108 double stitches, 216 individual · seam-informed schematic · as of the dates above
Others in the breaking
Tier 03 / Field Notes
Field notes from the bullpen.
Every pitcher fiddles. A thumb creeps lower, a seam catches more leather, a cue from a coach suddenly makes the pitch move. Pitch Atlas keeps those experiments visible, labeled, and debated, so the small discoveries stop disappearing into group chats and comment sections.
How notes rank
Evidence and context, never who shouts loudest.
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.
- 35%Provenance
Source tier and evidence. A coach-observed note with a link outranks an unverified hunch with none.
- 20%Adoption
How many other pitchers independently tried the same tweak. Real replication, not passive clicks.
- 20%Usefulness
Marked useful, measured against views so a small loud crowd cannot stuff the rank.
- 15%Context match
How close a note is to your level, slot, and pace context. Computed in your session, never stored.
- 10%Community confidence
Considered practice: a real sample size behind the claim, not one good bullpen.
The vocabulary
- Field Note
- One pitcher's report on a grip variant.
- Variant
- A specific, named change from the canonical grip.
- Tried This
- A second contributor replicating the tweak.
- Coach Note
- A coach reporting on an arm they work with.
- Source Challenge
- A standing request for the evidence behind a claim.
- Provenance
- The source tier and evidence that set a note’s rank.
- Adoption
- How many others independently tried it.
- Needs Evidence
- A note flagged for missing support, kept visible.
Your bullpen card
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Log a field note
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Field notes for the sweeper
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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.