Related Clues:

• Ballpark judges
• "Steee-rike!" callers
• Rain delay callers
• Men pocketing baseballs
• Diamond dusters
• Works at home, maybe
• Plate cleaners, at times
• Ones working at home, maybe
• Judges based near bases
• Nine Cooperstown members
• Home plate figures, informally
• Sluggers
• Masked men in parks
• Works at the ballpark, maybe
• They can call you out