Related Clues:

• Volleyball official
• Football's whistler
• One crying foul
• Call the game?
• Ring separator
• Zebra on the court, briefly
• Call the game
• Wrestling official, briefly
• One who whistles at athletes
• Time caller
• Play critic?
• Whistle-blower in a striped shirt
• Gridiron enforcer
• Guy with a whistle
• Authority on a field