it’s not over till it’s over

American  

[its not oh-ver til its oh-ver] / ɪts nɒt ˌoʊ vər tɪl ɪts ˈoʊ vər /

idiom

1. null it ain't over till it's over the outcome is not certain until the process is completely finished.

   The game is tied with only 9 seconds to go, but it’s not over till it’s over—we could still win!

   I’m pretty sure we have the votes to get this bill through the Senate, but it’s not over till it’s over.

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Etymology

Origin of it’s not over till it’s over

First recorded in 1973; attributed to Lawrence Peter “Yogi” Berra ( def. )