いっ はつ逆転 ぎゃくてんじゃなかったです
i' hatsugyakutenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 一発逆転

1. It wasn't a sudden turnaround.; It wasn't a one-hit reversal.

Past/Perfective
Negative
Polite
Casual Register