What is a centre back in football?

The centre back operates in the middle of the defence, directly in front of the goalkeeper. In a back four, two centre backs share the zone; a back three adds a third, which lets the middle defender step out with the ball while the other two cover. The position is also called central defender, or stopper in older usage.

Centre backs work in constant partnership. One typically attacks the ball while the other drops to cover, and both coordinate with the full backs and the holding midfielder so that the spaces around the penalty area never open at the same moment.

The core of the job is the duel: winning headers from long balls and crosses, blocking shots, intercepting passes into the striker's feet and timing challenges inside the most dangerous zone on the pitch. At set pieces the centre back defends their own box and often becomes a serious aerial threat in the opposite penalty area.

Just as important is organisation. The centre back sets the height of the defensive line, calls the step up for offside at the right moment and communicates constantly with the goalkeeper. A well-run defensive line makes strikers look slow; a silent one makes the same strikers look unplayable.

Modern football asks the centre back to start attacks, not just stop them. Against teams that defend deep, the centre back often has more time on the ball than anyone else, so line-breaking passes and forward carries from the back have become genuine weapons.

The evolution carries risk: losing possession near your own goal costs far more than losing it upfield, and opponents now press centre backs deliberately to force exactly that error. Composure under pressure has become as sought after as heading ability.