We are watching Argentina sleepwalk into the 2026 tournament with a left-back problem that nobody in Buenos Aires wants to name. Scaloni's recent squad selections show no serious attempt to introduce new fullback talent, and that negligence has a ceiling.

Copa América exposed the flaw in plain sight. Against Colombia and Peru, Argentina's defensive transitions broke down repeatedly on the flanks, conceding dangerous positions that a sharper opposition would have punished severely.

The depth chart behind those positions rests on players aged 30 or older, or players carrying significant injury history. Argentina's 2022 World Cup squad leaned on Tagliafico at 30 and Montiel at 25, yet survived because their midfield controlled possession for long enough to paper over the cracks.

That midfield dominance is not a permanent structural fix; it is a condition that requires the opposition to cooperate. At 2026, with South American and European sides arriving with deeper tactical preparation against Argentina specifically, opponents will not cooperate.

The counter-argument writes itself: injuries are temporary, and Argentina's attack is so dominant that no team can sustain pressure on their fullbacks anyway. That argument held in Qatar, where Argentina faced relatively limited pressing sides in the knockout rounds, but the 2026 tournament field is wider, deeper, and better prepared for exactly this kind of structural exploitation.

We are certain of this outcome: Argentina's left-back position becomes a decisive liability before the quarter-final stage of the 2026 tournament, and Scaloni's failure to build genuine depth there is the single most consequential squad-building error of his tenure.

This article was researched and drafted with AI assistance and reviewed by our editorial team.