At this point we can risk some guesses on the next rounds:
Octaves:
Brazil vs Chile: undefined, if Brazil doesn't improve won't be too hard for Chile though
Colombia vs Italia: probably Italy, but still risky
Netherlands vs Croatia : Netherlands
Costa Rica vs Ivory Coast: Costa Rica
French vs Nigeria: French
Germany VS Argelia: Germany
Argentina vs Swiss: Argentina
Belgium vs USA/Ghana : USA/Ghana .Will be an easier win for Ghana
quarters:
Chile vs Italy: Chile
Holland vs Costa Rica: Netherlands, but both have chance to win
French vs Germany: no idea
Argentina vs USA/Ghana: against USA: Argentina, against Ghana: Ghana