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A midfielder whose main job is to receive the ball deep and drive forward with it. Not a classic playmaker who sprays passes, more someone who runs through the middle of the pitch with the ball at their feet. They beat the first line of pressure by carrying, not passing. Mousa Dembélé at Tottenham was the prototype - he'd just glide past people.

Italian for "door-bolt." A defensive system built around tight organization, zonal marking, and a sweeper (libero) sitting behind the back line. Inter Milan under Helenio Herrera developed it in the 1960s, using formations like 1-3-3-3 or 1-4-4-1. The plan: defend deep, stay compact, hit on the counter. Critics called it negative football, but it worked and shaped defensive thinking across Europe.

The central defender who stops attackers, wins headers, and organizes the back line. Now they also need to be comfortable with the ball, play out under pressure, and read the game to intercept. Great partnerships matter: Ferdinand-Vidić, Puyol-Piqué, Van Dijk-Matip. The job has changed because possession football needs centre-backs who can pass, not just defend.

How good the shooting opportunities a team creates are, usually measured by average xG per shot. A team taking loads of shots from bad positions has low chance quality. A team taking fewer shots but from good positions has high chance quality. Guardiola teams typically have excellent chance quality because they work the ball into good areas rather than shooting from distance.

Running into the space between a centre-back and full-back. That gap is the "channel." Attackers who time runs into the channel are hard to track because neither defender wants to leave their position. A good channel run, combined with a good through ball, is one of football's most effective attacking combinations. Strikers who make these runs constantly stretch defenses.