A halfback is a key position in American football, typically responsible for both running and receiving the ball. Positioned behind the offensive line, the halfback often takes handoffs from the quarterback and tries to advance the ball down the field. They are known for their speed, agility, and ability to evade defenders, making them crucial for a team's offensive strategy. In addition to rushing, halfbacks also play a role in catching passes, contributing to the team's overall versatility. Famous halfbacks like Barry Sanders and Walter Payton have left a lasting impact on the game, showcasing the importance of this dynamic position in football.