I think Mexico will beat Sweden 2-1. They've been very strong so far and I think Sweden lacks offensive power

Germany should beat South Korea confortably. I guess Germany will win 3-1.

Switzerland should beat Costa Rica with ease and while being able to keep a clean sheet. Their team has also been very strong. I think Switzerland will win 2-0

Serbia vs Btazil, tough one. Serbia will in my opinion go all out but won't be enough against the Brazilian midfield. For me Brazil will win 3-2