Which of these is not a football (soccer) position?

There are five positions filled on every volleyball team at the elite level. Setter, Outside Hitter/Left Side Hitter, Middle Hitter, Opposite Hitter/Right Side Hitter and Libero/Defensive Specialist. Each of these positions plays a specific, key role in winning a volleyball match.

The setter is essentially the quarterback or point guard of the team. A setter runs the team's offense. They aim to receive the second touch, setting it for an attacking player.

The setter is much like the quarterback in football or the point guard in basketball. The setter coordinates the offensive movements of a team and is the player who ultimately decides which player will actually attack the ball.

In the sport of association football, each of the 11 players on a team is assigned to a particular position on the field of play: Goalkeeper, Right Fullback, Left Fullback, Center Back, Center Back (or Sweeper, if used), Defending/Holding Midfielder. Right Midfielder/Winger, Central/Box-to-Box Midfielder.