出冷门

Traditional (Taiwan): 出冷門

chūlěngmén ㄔㄨ ㄌㄥˇ ㄇㄣˊ

    • unexpected result
    • upset

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
come out of a cold door
Meaning
An unexpected result, especially an upset in sport; usually written 爆冷门.

Sources