Related Clues:

• Rink whistle-blower, briefly
• Caller of balls and strikes
• Football figure
• Ring master
• Ref's counterpart
• Whistle blower?
• Clipping caller
• Pro Bowl worker
• One making calls
• Stereotypically blind judge, of a kind
• Authority on diamonds, briefly
• Field worker?
• He works on diamonds
• One who decides what's fair
• Worker often seen crouching