>Mauricio Pochettino wasn’t hired to help the U.S. men’s national team win games against regional opponents or friendlies. Those were two areas in which predecessor Gregg Berhalter was still excelling up until the end of his tenure as coach. The perceived value of investing $6 million annually in the Argentine manager was his history of success in the club game. With his pedigree, the theory went, his fresh eyes could find diamonds in the rough of his new player pool and configure a system that would give the USMNT a better chance of making a deep run at the 2026 World Cup  
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On Tuesday night, we finally saw some evidence of evolution. Pochettino seemed to adapt based on persistent issues with his base 4-2-3-1 — which he had used in all 11 games to date in 2025 — to a 3-4-2-1. By dropping a player from the attacking line beneath his striker and introducing a third center back, his team was able to play with more decisiveness in transition and more downhill intentionality.  
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In that sense, the change in shape against Japan may have provided valuable validation of his trust in players like Arfsten and evidence that this new formation could fit his player pool best. There’s still a lot of work to be done, especially in midfield. But for now, the U.S. fanbase can see a sign of evolution under Pochettino — and, after such a tense aftermath to Saturday’s defeat against South Korea, that sure looks like some measure of progress.

[Jeff Rueter] Pochettino’s back three worked for the USMNT. What might that mean for the World Cup?