Filthy
A pitch with exceptional movement, velocity, or deception that makes it nearly unhittable, the ultimate compliment for nasty stuff.
Example Usage
“That slider was absolutely filthy, dropped off the table at the last second.”
Filthy
Filthy describes a pitch so nasty, so unhittable, that it's almost unfair. When a pitch is called "filthy," it means the movement, velocity, or deception was exceptional, the kind of pitch that makes hitters look foolish.
What Makes a Pitch Filthy
Key Characteristics
- Late movement: Breaks at the last moment
- Sharp break: Dramatic movement
- Deception: Looks hittable, then isn't
- Velocity differential: Unexpected speed change
- Location: Painted on corners
Common Filthy Pitches
- Sliders with sharp, late break
- Curveballs with huge drop
- Splitters that fall off the table
- Changeups with arm-side fade
- Two-seamers with heavy sink
Usage in Baseball Culture
How It's Used
- "His slider is filthy tonight"
- "That was a filthy pitch"
- "He's got filthy stuff"
- "Absolutely filthy curveball"
Similar Terms
| Term | Meaning |
|---|---|
| Filthy | Exceptionally nasty |
| Nasty | Great movement |
| Dirty | Unhittable |
| Disgusting | Over-the-top good |
| Electric | Impressive velocity |
Famous Filthy Pitchers
Known for Filthy Stuff
- Mariano Rivera: Cutter was legendary filthy
- Clayton Kershaw: Curveball described as filthy
- Josh Hader: Slider called filthy
- Aroldis Chapman: Filthy fastball/slider combo
Why "Filthy" Works
The Metaphor
- So good it's almost illegal
- Unfair to hitters
- Beyond normal quality
- Crosses the line of fairness
- Makes the game look easy
Related Terms
Slider
A breaking pitch that moves laterally and downward, thrown with a combination of fastball velocity and curveball break.
Curveball
A breaking pitch with significant downward movement caused by topspin, often called a 'hook,' 'yakker,' or 'Uncle Charlie.'
Splitter
A pitch gripped with fingers spread wide apart that looks like a fastball before diving sharply downward as it approaches the plate.
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