Simply put,

Simply put, the Raiders have everything to play for while the Chargers are already on vacation. If Jackson wants to honor Turner then he’ll get his team to rollover for the Dolts. Now if Jackson is serious about his respect for Norv then he’ll do his fellow coach a favor and get him out of the head coaching business. Some people are built for certain challenges while others are not. Unfortunately for all those bandwagon fans in San Diego their coach was never built for this. It’s up to the Raiders to expose this truth one last time.

simply put
one last time

それぞれ成句だと思う。

Complexly putとかない。Simply putがCOCAで793件中、5件に4件がこの文頭用法だ。
Plainly putが8件、frankly putが2件