That's actually a 1-1-3 with the two wings playing up to make it look like a 1-3-1. They will play some 1-3-1 that looks just like this initially.

j'aime cette défense

Will also play 2-3 that looks like this also.

30 segundos de juego?

it is Amoeba

Coach, at first glance I don't think it's 1-3-1 For me it is 2-3 customizable. The bottoms defend very open. It could be 1-1-3 but 2-3 defends like this too

That's a 1-3-1 at first but offense is causing the defense to break rules forcing them into a 2-3 zone

Looks like they are out of position alot

Its a tandem 2-3