Related Clues:

• Gridiron 'zebra'
• Zebra on the gridiron
• TKO declarer
• TKO caller
• NBA employee
• Ump's kin
• Call, as a game
• Ump's colleague
• Sports 'zebra'
• Fight figure
• Round figure?
• Call the shots?
• Paid whistle blower
• Whistle-blower?
• Short mediator