Related Clues:

• 2 + 2 = 5, e.g.
• Typo, for one
• Baseball blunder
• Mishandled fly, e.g.
• Reason to recalculate
• Infielder's mistake
• Unwanted computer message
• Box-score notation
• Typo, e.g.
• Good thing not to be in?
• Proofreader's find
• Proofreader's catch
• Goof-up
• Baseball booboo
• Minor error