The German coach had already established his playing identity. However, this year he holds a more complete and versatile squad, shaped in collaboration with sporting director Deco. The depth of the squad allows him to make choices that would have seemed almost unthinkable a year ago.

The first principle is clear: no one has a permanent spot. Only Raphinha and Lamine Yamal have featured in all eight matches. From game to game, Flick rotates three to five players, protecting the team from fatigue while simultaneously reminding everyone that a starting spot is not inherited—it is earned.

The second major change concerns versatility. Eric García has shifted from central defense to the right flank, while Xavi Espart offers options on both sides. Raphinha, meanwhile, has transformed into a central forward without losing his intensity, goal-scoring touch, or defensive selflessness.

Even a big reputation offers no guarantee of a starting spot. Dominik Livaković and Wojciech Szczęsny share duties between the posts. Gavi has seen his playing time reduced, and even Jules Koundé was left out of the starting lineup for three consecutive matches. Flick doesn't look at CVs when picking his XI; he looks at form, readiness, and the specific needs of each match.

The calculated rotation between Dani Olmo and Fermín López is also significant. The two alternate in the attacking midfield role, maintaining a healthy competition that benefits the team. At the same time, Fermín tends to link up with Anthony Gordon, while Olmo combines with Karim Adeyemi, creating two distinct attacking dynamics.

Consistency is now being rewarded in Barcelona. Young Espart has held onto his spot despite the presence of João Cancelo. The Portuguese player needed to respond on the pitch, and he did so against Racing Santander, scoring twice and reclaiming his spot in the starting lineup.

Physical fitness lies at the heart of it all. With Benjamin Kugel playing a pivotal role in the team's preparation, Barcelona is able to press immediately after losing possession, cover vast distances, and repeatedly execute explosive movements.

Flick’s revolution does not lie in a complex formation; it is found in the day-to-day routine, in a meritocratic approach, and in the elimination of complacency. In this Barcelona, everyone gets a chance, but no one has any guarantees.