A hooker is a position in rugby and American football responsible for specific roles during gameplay. In rugby, the hooker is part of the forward pack and plays a crucial role in scrums, where they use their feet to win possession of the ball. They also support lineouts and are involved in open play, often making tackles and carrying the ball. In American football, the term "hooker" is less common, but it can refer to a player who plays a similar role in certain formations. This player may be involved in blocking or receiving passes, contributing to the team's offensive strategy.