What each position actually does, in and out of possession — plus the tactical variations teams play within it.
The last line of defense and, increasingly, the first line of attack. Commands the box on crosses, organizes the back line, and starts moves with distribution under pressure.
A goalkeeper who plays far off their line, acting as an auxiliary defender behind a high back line in addition to the traditional shot-stopping and handling duties.
Defends the left channel one-on-one and overlaps into attack down the same side, balancing defensive discipline with the stamina to get up and down the full length of the pitch.
The mirror of the left-back on the right flank: tracks opposing wingers, tucks in centrally when the ball is far away, and supports attacks by overlapping or underlapping.
Wins aerial and ground duels against the opposition's forwards, reads danger before it develops, and is trusted with the ball to start attacks from the back.
Combines a full-back's defensive duty with a winger's attacking range, providing the width alone down the left in systems without a winger and covering the entire touchline in both directions.
The mirror of the left wing-back on the right flank: the sole provider of width down that side, expected to defend the channel and support the attack in equal measure.
A full-back who steps into central midfield in possession instead of overlapping down the wing, trading traditional width for an extra body in the middle of the pitch.
Screens the back four, breaks up opposition attacks before they start, and recycles possession simply so more creative teammates further forward can do their work.
The engine of the team: covers box to box, links defense to attack, and balances contributing to both phases of play depending on the moment in the game.
Operates in the pocket between the opposition's midfield and defense, looking for the pass or the run that unlocks a settled defensive shape.
Patrols the left side of a flat midfield four, tracking back to help the left-back defensively and providing width in possession.
The mirror of the left midfielder: holds the right side of a flat midfield four, balancing defensive tracking with attacking width.
A central midfielder who covers the full length of the pitch every match, contributing fully to both defensive duty and the attack rather than specializing in either.
A deep midfielder who drops between or beside the center-backs in possession to start attacks personally, rather than simply screening the defense.
Stays high and wide on the left before cutting inside or driving at the full-back, stretching the defense and creating or finishing chances.
The mirror of the left winger on the right flank: stretches play wide, then attacks the box or cuts inside depending on which foot leads their game.
The team's most direct route to goal: holds up play, makes runs in behind, and is judged above all on the ability to finish chances.
A winger stationed on the opposite flank to their stronger foot, so cutting inside onto that foot is the first instinct rather than a fallback option.
A striker who drops deep into midfield rather than staying on the last line, dragging opposition center-backs out of position and creating space in behind for others to run into.