Related Clues:

• Stumbled
• Had a brain freeze
• Made a boo-boo
• Made a goof
• Misplayed
• Went awry
• Wasn't true
• Was mistaken
• Botched a catch
• Lost money on "Jeopardy!" e.g.
• Was at fault
• Dropped the ball
• Denounced
• Made an overthrow, say
• Made a blunder