Related Clues:

• NHL official
• Goaltending caller
• Video replay user
• Lions' zebra
• Hard court judge?
• NBA team member?
• Official with a whistle, informally
• Slo-mo replay reviewer
• One is on top of recording every foul
• Wearer of stripes on a court, informally
• Sports 'zebra,' for short
• Official in a striped shirt, for short
• Call on the field
• Sure — football will involve one
• One maintaining order on the court, say