come out of left field

come out of left field

To originate from a surprising or strange place. ("Left field" is the metaphorical origin of something uncommon, unpopular, or otherwise strange.) That suggestion certainly came out of left field! How did you come up with that one?
See also: come, field, left, of, out
Farlex Dictionary of Idioms.

come out of left field

[for a problem or dilemma] to come from an unexpected place. (See also out of left field.) This new problem came out of left field. We were really surprised. Your remarks came out of left field. I can't understand your complaint.
See also: come, field, left, of, out
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • come from left field
  • from left field
  • be (out) in left field
  • reverse (one's) field
  • reverse field
  • Puppy Bowl
  • field
  • field a question
  • take the field
  • God's acre