What is another word for knuckleballers?
Pronunciation: [nˈʌklɪbˌɔːləz] (IPA) 
Knuckleballers are pitchers who have mastered the art of throwing a difficult knuckleball pitch. They are often referred to by different synonyms depending on the region and culture. Some of the popular synonyms for knuckleballers include flutterballers, floater pitchers, twirlers, and dancing pitch hurlers. In Japan, they are called "Eephus tossers" while in Latin America, they are referred to as "mariposa" pitchers. Another nickname for a knuckleballer is a "butterfly ball" pitcher for the way the ball seems to dance and flutter in the air. Regardless of the name or synonym, knuckleballers can be a formidable and challenging opponent on the baseball field.
