Sports Terms That Start with U
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![A baseball pitcher uncorking Uncle Charlie (a curveball) to the batter.](https://d33wubrfki0l68.cloudfront.net/2773aef3b1c32187013f9260ca2743832afd7511/f5173/img/pitcher-throwing-uncle-charlie-curveball.jpg)
What is the Origin of the Baseball Term, Uncle Charlie?
The term Uncle Charlie in baseball refers to a pitcher's curveball. It's slang, just like deuce is. | Learn More
| Read: 0 minutes
The term Uncle Charlie in baseball refers to a pitcher's curveball. It's slang, just like deuce is. | Learn More