Related Clues:

• Perfect, as one's skills
• Something to keep
• Sharpen, as on a whetstone
• Work on the edge?
• Make perfect
• Get a run
• One of 80's four
• Sportscast offering
• Make sharper
• Put to the grindstone
• ESPN datum
• Hit pay dirt
• 20, in the Gettysburg Address
• Conductor's reference
• Make a touchdown