a foregone conclusion

idiomPart ofconclusion

a foregone conclusion — idiom

1. a result that is so certain to happen that it seems already decided, even before

1.idiom
Definition

a result that is so certain to happen that it seems already decided, even before the situation is fully resolved

Example

With their best player injured, the match was a foregone conclusion before it even started.

The election result was a foregone conclusion since the opposition had no strong candidate.