Perfect weather example:
Our Saturday game was set to kickoff @ 1pm. We officially kicked off @ 3:15pm. Game officially ended at 6:21pm. We both were adamant on getting the game fully played Saturday because there was no way eitehr team can play a game Monday night & turn around and play a Lower State final the next day. Surely, for player safety, the HSL wouldn't mind extending the game a day in case of weather or other circumstances that may prevent a game getting played the originally scheduled date.
And to get back on topic here, there's enough in place that doing seeding over region works.