Related Clues:

• Gets it wrong
• Drops the ball, literally or figuratively
• Goes wrong
• Muffs it
• Fails to catch a pop-up
• Goes off track
• Creates a snafu
• Is mistaken
• Fouls up
• Needs an eraser
• Is off the mark
• Botches one
• Goes off course
• Turns gold into lead, e.g.
• Displays fallibility