Possible Clues:

• Ball clubs
• A CA might make them numerously dogged
• Numbers of them may be after a pen in the form of a chain
• Cents figures in many prices
• One might pen these numbers in the form of a chain
• 9s
• Numerous enough to pen them in the form of a chain
• Near-perfect diving scores
• 'Go Fish' request
• Figures attained by those who dress up elaborately