What is a full back?

A full back is a defensive position in soccer, rugby, and American football. In soccer, a full back typically plays on the left or right side of the defense and is responsible for preventing opposing players from advancing down the wing and delivering crosses into the box.

Full backs are generally fast and agile players who have good stamina and the ability to quickly transition from defense to attack. They must be able to overlap with their team's wingers and provide support in the attacking third, while also tracking back to defend when necessary.

In American football, a full back is a position on offense that primarily blocks for the running back, but can also catch passes out of the backfield. Full backs are typically larger, more physical players who excel at blocking and creating running lanes for the ball carrier.

Overall, full backs in both soccer and American football play an important role in both defense and offense and are vital to the success of their teams.