Possible Clues:

• What Pietro Mennea had on his vest
• Give ___ rest!
• Give ___ try
• "Give ___ rest!" (2 words)
• Letters on the vest of Pietro Mennea, for instance
• "Let's call ___ day" (2 words)
• 'Give ___ go'
• Call-day connector
• SECOND PART OF 23
• 'I've said ___ thousand times ...'