Bielsa’s style is extremely intense, physically and tactically. Complicated and systematic approaches are worked out based on the opposition’s structure, learned, and practiced in minute detail.
Defence is based on a swarming, but managed, press; attack is based on verticality, with a possession-based, positional system.
One feeds the other, with counter-pressing also a feature of Bielsa’s approach. Bielsa has explained his philosophy using four terms: “concentración permanente, movilidad, rotación y repenitización”.
This philosophy has its roots in Argentina’s footballing history, and two of its towering, and opposing figures.