Related Clues:

• Lapse
• One way to get to first base
• Diamond goof
• Diamond flaw
• Fielder's flub
• Amusing act
• It's marked with an X
• Kind of message
• Trial mate
• Baseball boo-boo
• Play around, with 'off'
• Cause for a correction
• Misplay
• Trial partner
• It could be clerical