A sweeper is a type of slider that breaks mostly sideways, with big horizontal movement, a little drop, and a bit less speed than a traditional slider. In 2023, MLB sweepers averaged about 15 inches of side-to-side break, compared with about 6 inches for sliders. Statcast began tracking it as its own pitch that year. For young pitchers, it follows the same rule as any breaking ball: fastball and changeup first, breaking balls in the mid-teens.
Turn on a big league game and you’ll hear the word constantly: sweeper. It’s the pitch that starts at a right-handed hitter’s hip and ends up a foot off the plate. And sooner or later, your son is going to ask how to throw one.
Here is what a sweeper pitch is, how it differs from a slider and a curveball, and what it means for a young pitcher.
What a sweeper is
A sweeper is a type of slider that moves mostly sideways. Instead of the short, tight break of a traditional slider, it sweeps across the plate with big horizontal movement and relatively little drop. It’s also thrown a bit slower than a typical slider.
Pitchers have thrown big-breaking sliders for a long time. What changed is the label: in 2023, MLB’s Statcast tracking system started classifying the sweeper as its own pitch type, separate from the slider. That’s why you suddenly hear the name everywhere.
Sweeper vs slider vs curveball
| Pitch | How it moves |
|---|---|
| Sweeper | Big side-to-side break, a little drop, slower than a slider |
| Slider | Short, late break to the glove side, thrown harder |
| Curveball | Mostly downward break, the slowest of the three |
| Cutter | Small, late glove-side break, almost fastball speed |
For more on the cutter, see our guide on what a cutter is.
Why big leaguers love it
A sweeper is especially tough on same-side hitters. To a right-handed hitter facing a right-handed pitcher, it can look like it’s coming at him and then slide far away off the plate. Paired with a fastball, it gives hitters two very different looks out of a similar release.
“A sweeper is a slider. The age guidance is the same.”
Fastball first, changeup second, breaking ball later.Should a young pitcher throw a sweeper?
A sweeper is a breaking ball, so the same guidance applies as for any slider or curveball. Most experts recommend waiting on breaking balls until the mid-teens, once a pitcher has a reliable fastball and changeup and his body is more mature. Young pitchers who chase big break often twist their wrist and arm to force it, and that’s the habit to avoid. Our guides on whether a youth pitcher should throw a slider and what pitches a young pitcher should learn lay out the order.
For a high schooler who already commands a fastball and changeup, a sweeper can be a great addition when it’s taught by a qualified coach and fits his arm slot. Pitchers with lower, more side-arm slots often find sweepers come naturally. Our guide on arm slots explains why.
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A sweeper is a slider with big side-to-side break, a little drop, and a bit less speed, which MLB started tracking as its own pitch in 2023. It’s nasty against same-side hitters, which is why it’s everywhere in the big leagues. For young pitchers, it follows the same rules as any breaking ball: fastball and changeup first, breaking balls in the mid-teens, taught by a good coach. Little things now, big numbers later.
Common questions
What is a sweeper pitch?
A sweeper is a type of slider with big side-to-side movement and relatively little drop. It’s usually thrown a bit slower than a traditional slider.
What is the difference between a sweeper and a slider?
A sweeper breaks much more sideways and is a little slower. In 2023, MLB sweepers averaged about 15 inches of horizontal movement, compared with about 6 inches for sliders.
When did the sweeper become a pitch?
Pitchers have thrown big-breaking sliders for years, but MLB’s Statcast system began classifying the sweeper as its own pitch type in 2023.
Is a sweeper bad for a young pitcher's arm?
It’s a breaking ball, so the usual guidance applies: wait until the mid-teens, after the fastball and changeup are reliable, and learn it from a qualified coach. Any arm pain means stop and see a doctor.
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