Possible Clues:

• Too old to be eligible
• Not young enough to get round to rev up given time
• Past it, by round five, eager to pack up
• Reporting a hundred short, no longer useful
• Not young enough
• Extra
• Gave o'er at no longer being young enough
• Insurance initially annulled, being not young enough
• Old woman having good energy? Too old!
• Girl entering I rebuffed could be too old