Fassio Goyeneche/Eugenio Barrera look like the steadier, more structured pair for a FIP Silver setting, where rally tolerance and side discipline usually decide tight sets. Nogueira/Lujan Rodriguez can be dangerous if they speed up exchanges and win the net early, but they’ll need low error volume in outdoor conditions. Slight edge to Fassio/Eugenio in a tactical, momentum-swinging match, likely in 3 sets.