Related Clues:

• Penalty declarer
• Striped whistle-blower
• Ump's relative
• Referee, slangily
• TKO decider
• Football official
• Ring figure, familiarly
• One who cries foul
• Ring official
• Coin flipper
• Play caller
• Field marshal?
• Gridiron 'zebra'
• Zebra on the gridiron
• TKO declarer