Full back and wing back roles

The position itself is straightforward — a defender on the outside of the back line, defending the wide area on their side of the pitch. What that player actually does varies hugely. Some are pure attackers in defence, overlapping the winger to deliver crosses and only nominally defending. Some step into central midfield in possession, almost as a third midfielder for the build-up. Some sit deep and concentrate on defending the flank, with little attacking responsibility at all.

The change has come from tactics. As wingers have moved inside to cut onto their stronger foot and shoot, the wide attacking work has fallen to the full backs behind them, who now deliver more crosses than wingers in many top teams. As possession-based teams have tried to add bodies to the build-up, full backs have moved into midfield to help. As back-three systems have come back into fashion, wing backs have inherited a very different version of the wide role — half-defender, half-winger, covering the entire wide area on their own. The result is a position that supports more recognisable roles than almost any other on the pitch.

The attacking full back is the most familiar version of the position. They take a starting position on the outside of the back four and join attacks down the wing, overlapping the winger to deliver crosses or stretching the defence with runs into space. When the team loses the ball, they recover to defend their flank, usually one-on-one against the opposition winger.

The role works best alongside an inverted winger or a wide forward who cuts inside, leaving the outside lane free for the full back to attack into. Most modern attacking full backs deliver more crosses than wingers, since the winger inside them is biased toward shooting rather than reaching the byline. The trade-off is the space behind, which a quick winger can attack on the counter — most attacking full backs need a holding midfielder or a covering centre back behind them to manage the gap.

The underlapping full back attacks the inside channel while the wide attacker stays outside. Instead of overlapping down the touchline, they run through the half-space to receive a pass, cross from a narrower angle or arrive near the edge of the box.

This works when the winger or wide forward holds the width and drags the opposing full back out with them. The underlap gives the attacking team a second runner on the inside without abandoning the wide lane.

The inverted full back starts in the back four like any other full back but steps into central midfield in possession. The aim is to add another player to the build-up, helping the team beat a press and keep the ball in central areas. The wide attacker on the same side stays high to give the team width, while the inverted full back tucks inside to make the midfield a three or a four during the build-up.

The role suits possession-based teams whose main aim is to dominate the ball. Adding a body to midfield gives the team numerical superiority in the central zone where most of the play happens, and the inverted full back's positioning makes them a useful passing option from the centre backs. The trade-off is the space behind them — when the team loses the ball, the inverted full back is in midfield rather than at the back, and a quick winger can attack the space on the counter before they recover.

The defensive full back is the conservative version of the role. They stay deeper, rarely overlap, and concentrate on defending one-on-one against the opposition winger and tracking back when the team loses the ball. Their attacking contribution is limited to short passes back to the centre backs and the occasional simple ball into the winger ahead of them. The role is built around defensive reliability rather than attacking output.

This kind of full back suits deeper-defending teams who do not want their wide defenders pushing forward, especially against opposition who counter-attack at speed. A counter-attacking team itself can also use defensive full backs, with attacks coming through more advanced wide players rather than overlapping defenders. The role is also a useful in-game adjustment — a team protecting a lead late in a match often pulls its full backs deeper, turning attacking full backs into temporary defensive ones.

The wing back plays the wide role in a back-three system such as 3-5-2 or 3-4-3. Where a full back has a winger ahead and a centre back inside to cover the flank with them, a wing back covers it almost on their own. They drop back to make a back five in defence, push forward to make a front five in attack, and have to handle the entire wide area in transition. The role is half-defender, half-winger, and one of the most demanding wide roles in football.

The wing back defines how 3-5-2 and 3-4-3 systems work. The width comes from them rather than from wingers, which lets the team play with a narrower front line and pack the central zone with attackers. The trade-off is the running. A wing back has to cover almost every blade of grass on their flank, and stamina is a non-negotiable requirement of the role. Most teams who play with wing backs choose players who can both defend like a full back and attack like a winger, and rotate them more often than other positions.

The inverted wing back applies the same idea as an inverted full back, but inside a back-three system. One wing back tucks inside to add a body to midfield in possession; the other wing back holds the width on the opposite flank to keep the team's attacking shape balanced. The team builds through the inverted wing back's central position before the ball is moved wide to the holding wing back, who then attacks the space.

The role suits possession-based back-three teams who want extra bodies in midfield without giving up the width that the wing back system provides. The asymmetry — one wing back inside, one wing back wide — is a common modern setup, especially in 3-4-3 systems built around build-up. The trade-off, as with an inverted full back, is the space behind on the inverted wing back's side, which the team has to cover with a centre back stepping out or a midfielder dropping in.

The defensive wing back is the conservative version of the wing back role. In a 5-3-2 or 5-4-1, the wing backs effectively form a back five when the team is defending, with much less attacking responsibility than a traditional wing back. They stay deeper, hold the width of a defender rather than a winger, and concentrate on defending the flank against opposition wide attackers. The team accepts less attacking width in return for a more solid defensive base.

This kind of wing back suits teams who play with a back five out of possession by choice, especially against opposition with strong wide attacking play. The role lets the team match the opposition's wide threat without committing extra bodies to the back line, and gives the centre backs the cover they need to handle the central zone without being pulled wide. Many teams move between an attacking wing back role and a defensive wing back role within the same match, depending on the scoreline and the time on the clock.

The complete wing back is not a separate tactical system so much as the all-round version of the role. They defend like a full back, attack like a winger, carry the ball, cross, combine inside and recover quickly when possession is lost.

This profile is valuable but rare because it asks for almost every wide-player quality at once. A complete wing back needs the endurance to cover the whole flank and the decision-making to know when to attack, when to hold position and when to become part of the defensive line.

The right role depends on the formation and the player in front. A back four can use a defensive full back for security, an attacking full back for width, or an inverted full back to add a midfielder in possession. A back three usually asks the wing backs to provide more of the team's width.

The role also depends on the wide attacker. If the winger moves inside, the full back often overlaps outside. If the winger holds the width, the full back may underlap inside. If the team wants central control, the full back may invert into midfield instead of attacking the outside lane.