Slider
Also known as: slide piece, slurve
The slider is a breaking ball with lateral movement and some downward tilt, faster than a curveball and typically sharper in its late break.
Thrown with a cut-fastball grip tilted slightly off-center, the slider relies on gyroscopic spin to stay tight and then snap laterally at the last moment. Its effectiveness comes from looking like a fastball longer than a curveball does. Right-handed pitchers use it to carve in on left-handed hitters and to back-foot right-handed hitters. The "sweeping" slider variant breaks more horizontally; the "gyro" slider drops more vertically. Both share the characteristic of late, deceptive movement.
Example
She threw a sweeping slider that started at the hitter's hip and finished off the outside corner — a textbook back-foot pitch.
Related terms
- CurveballThe curveball is an off-speed breaking pitch with topspin that makes it arc downward, often dramatically, as it crosses the plate.
- Cut FastballThe cutter is a fastball with late glove-side movement — harder than a slider, smaller break than a slider — that jams or cuts away from hitters.
- Horizontal BreakHorizontal break is the lateral movement a pitch generates from spin, measured in inches to the arm side (positive) or glove side (negative).
- Pitch TunnelingPitch tunneling is the strategy of throwing different pitch types that share the same flight path early before diverging late — making it nearly impossible for the hitter to distinguish them in time.
- Pitching DeceptionPitching deception refers to any element of a pitcher's mechanics, grip, or delivery that delays or confuses the hitter's ability to identify the pitch type, speed, or location.
- Spin Rate (Pitching)Spin rate is how fast the ball rotates in revolutions per minute (RPM) after leaving the hand — higher spin amplifies the Magnus effect and increases pitch movement.
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