back the wrong horse
US /bæk ðə rɔŋ hɔrs/
UK /bæk ðə rɔŋ hɔrs/

1.
押錯寶, 支持錯誤的人或事
to support a person or thing that is not successful or that turns out to be a bad choice
:
•
I really backed the wrong horse when I invested all my savings in that failing company.
我把所有積蓄都投到那家失敗的公司,真是押錯了寶。
•
Many critics felt the director had backed the wrong horse with his experimental film.
許多評論家認為導演的實驗電影是押錯了寶。