What is a Sweeper? Definition and Examples
A sweeper is a breaking pitch thrown in the low-to-mid 80s with exaggerated horizontal break—often 15 to 20 inches—and minimal vertical drop, classified by Statcast as a distinct pitch from the traditional slider.
What is a sweeper in baseball?
A sweeper is a breaking ball that moves predominantly sideways, with much more horizontal break than a traditional slider and less vertical drop than a curveball. Thrown in the low-to-mid 80s, it features a near-gyro spin component that produces sharp lateral movement—often 15 to 20 inches of horizontal break from a right-handed pitcher. Statcast formally added "sweeper" as its own pitch classification in 2023 to distinguish it from the conventional slider.
How Statcast classifies the sweeper
The sweeper shares a grip family with the slider but differs in spin axis and physics. A typical sweeper profile looks like this:
- Velocity: 78–84 mph
- Horizontal break: 14+ inches (the defining feature)
- Vertical drop: 0–5 inches below the expected trajectory
- Spin rate: 2,400–2,900 rpm
- Spin efficiency: low, usually under 30%—much of the spin is gyroscopic
Statcast's Hawkeye cameras track spin axis and movement, and sweepers register a distinct movement signature from sliders (tighter, shorter break) and curveballs (more drop than sweep). The classification decision is made by the movement, not by what the pitcher calls the pitch.
Worked example
Shohei Ohtani's sweeper in 2023 was one of the most dominant pitches in baseball. It averaged 83.4 mph with roughly 17 inches of horizontal break. Ohtani threw it more than 40% of the time against right-handed hitters and held opponents under a .200 wOBA against it. His whiff rate on the pitch sat above 45%, elite for any breaking ball.
Other prominent sweeper users include Yu Darvish, Corbin Burnes, Clay Holmes, and the entire Yankees staff at the height of the pitch's adoption wave. Spencer Strider and Kevin Gausman added sweeper variants between 2022 and 2024, and each saw measurable gains in strikeout rate.
Why the sweeper matters
The sweeper reshaped modern pitch design. It plays especially well against same-handed hitters because the extreme lateral break starts on the inner half and ends off the plate, generating chase swings and weak contact. Teams like the Rays, Yankees, and Dodgers built pitching staffs around it during the 2022–2024 boom.
For fantasy and DFS, pitchers who added a sweeper often saw their strikeout rates jump three to five percentage points inside a single season—a strong leading indicator when scanning for breakout arms.
Limitations and common misconceptions
- Not every slider is a sweeper. Classification is based on movement, not what the pitcher calls the pitch. A pitch labeled "slider" on a broadcast may show up as a sweeper on Baseball Savant, and vice versa.
- It can be vulnerable to opposite-handed hitters. The pitch often sweeps into the barrel of an opposite-handed hitter, and MLB data shows reverse-platoon tendencies for many sweeper-heavy arms.
- It demands specific arm slots. Lower-three-quarters and sidearm release points generate the horizontal profile most efficiently, which is why the pitch clusters around certain delivery types.
Related terms
In Legends Deck
Sweeper-heavy pitchers carry a distinct rating profile in Legends Deck. A card with a true sweeper receives a horizontal-break modifier that boosts whiff rate against same-handed hitters and a small penalty in the reverse split. When you draft Ohtani's 2023 card, the engine simulates his 40-plus-percent sweeper usage against righties and the corresponding weak-contact profile—so the pitch plays the same in-game as it did on a Tuesday night in Anaheim.