the odds are stacked against you

US /ðə ɑːdz ɑː stækt əˈɡɛnst ju/
UK /ðə ɑːdz ɑː stækt əˈɡɛnst ju/
"the odds are stacked against you" picture
1.

不利な状況にある, 成功の可能性が低い

the chances of you succeeding are very small

:
He knows the odds are stacked against him, but he's still going to try.
彼は不利な状況にあることを知っているが、それでも挑戦するつもりだ。
With so many experienced competitors, the odds are stacked against you.
経験豊富な競合が多いため、成功の可能性は低い