Related Clues:

• Umpire's yell
• On an errand, e.g.
• Line judge's call
• Fast asleep
• Lady Macbeth's order
• Word on a check
• Invalidate, as a check
• Null and ___
• "Casey at the Bat" finale
• Null and --
• "Break," "make," or "take" follower
• In's opposite
• No longer popular
• See 122-Across
• Like Ricky Martin