from left field

from left field

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

from (or out of) left field

from a position or direction that is unexpected or unconventional. informal, chiefly North American
The expression originated in the language of baseball: left field is the part of the outfield to the left of a right-handed batter as he faces the pitcher, which does not often come into play.
2000 The Register Nokia…knows that killer apps have always come out of left field—obvious once someone has done them, but prior to that not predictable.
See also: field, left
References in periodicals archive ?
Webster has two saves in the pitching circle this year and one from left field.
Bonds' throw from left field was 10 feet up the line but arrived in plenty of time for catcher Bobby Estalella to tag out the slow-footed Fabregas, who was waved home by third-base coach Ron Roenicke.
Although the fans went wild when Eric Karros followed Grudzielanek with a shot into the left-field stands that capped a five-run inning, they saved their best for Hubbard, who came in from left field to put on the equipment to start the seventh.
Brett Butler started the final phase of his rehabilitation Thursday when he made about 15 throws from left field into the infield.
Center fielder Todd Hollandsworth settled beneath it, and Billy Ashley drifted in from left field.
He moved in from left field to shortstop to cover for Gagne's absence, but a lapse in concentration helped the Cubs break a 0-0 deadlock in the fourth.