Slider

A slider is a breaking pitch that combines the velocity of a fastball with horizontal and downward movement. It's thrown harder than a curveball but with tighter, sharper break, often the "out pitch" for power pitchers.

Slider Movement

A typical slider:

• Velocity: 80-90 mph (faster than curves, slower than fastballs)
• Horizontal break: Moves away from same-handed batters
• Downward action: Drops as it reaches the plate
• Late movement: Breaks near the plate, making it hard to track

Slider vs. Curveball

Slider	Curveball
Tighter spin	Looping spin
Later break	Bigger, earlier break
More velocity	Slower speed
Lateral + downward	Primarily downward

Slider Grips

The slider is gripped like a fastball but off-center:

• Fingers placed slightly to the side of the ball
• Pressure on the outer third
• Arm action similar to fastball
• Wrist position creates the spin

The Modern Sweeper

In recent years, the sweeper has emerged, a slider with more horizontal movement and less vertical drop. It looks like a fastball until it suddenly sweeps away from batters.

Famous Sliders

• Randy Johnson: Legendary left-handed slider
• John Smoltz: Unhittable when on
• Corey Kluber: Modern slider master
• Jacob deGrom: Premium slider velocity

Arm Health Concerns

Some believe sliders stress the elbow, though research is mixed. Young pitchers should develop the changeup first and wait on the slider.