If Argentina win Group C, they would expect to face Denmark. The Netherlands look the most likely opponent in the quarterfinals, with Spain or arch-rivals Brazil probably awaiting in the semifinals.
Portugal coming out on top in Group H would surely see them face another European side, in Serbia or Switzerland, in the Round of 16.
Belgium are a potentially tough quarterfinal opponent, before either France or England would likely battle Fernando Santos' men for a place in the final.
Projected Argentina route to final after winning Group C:
- Round of 16: Denmark
- Quarterfinals: Netherlands
- Semifinals: Spain
Projected Portugal route to final after winning Group H:
- Round of 16: Switzerland
- Quarterfinals: Belgium
- Semifinals: France
If Argentina win Group C and Portugal finish 2nd in Group H
We already know Argentina's route to the final in this permutation. But they would have to face Portugal in the semifinals, if the Euro 2016 winners missed out on top spot in Group H.
Brazil would be Portugal's most likely opponent in the second round, before potentially taking on Spain in the quarterfinals.
Get through that, and then it would be La Albiceleste and Messi in Lusail on December 13, for Portugal's chance to play in the final for the first time.
Projected Portugal route to final as Group H runner-up:
- Round of 16: Brazil
- Quarterfinals: Spain
- Semifinals: Argentina