Figure 7
From: Defining a historic football team: Using Network Science to analyze Guardiola’s F.C. Barcelona

F.C. Barcelona organization during “attacking phases”. Four players organize around a fifth player who is having the ball. Two concentric circles around the ball define the helping zone (radius d1) and the cooperation zone (radius d2). Passes between players in the helping zone are promoted. The defensive phase is organized in a similar way, but in this case, pressing the opponent who has the ball.