A midfielder is an association football position.〔
〕 Midfielders are generally positioned on the field between their team's defenders and forwards. Some midfielders play a more defensive role, while others blur the boundaries between midfielders and forwards. The number of midfielders on the team and their assigned roles depends on the team's formation; the collective group of these players on the field is sometimes referred to as the midfield.〔(【引用サイトリンク】title=Football / Soccer Positions )〕
Most managers assign at least one midfielder to disrupt the opposing team's attacks, while others may be tasked with creating goals, or have equal responsibilities between attack and defence. Midfielders are the players who typically travel the greatest distance during a match.
Central or centre midfielders are players whose role is divided roughly equally between attack and defence. These players will try to pass the ball to the team's attacking midfielders and forwards and may also help their team's attacks by making runs into the opposition's penalty area and attempting shots on goal themselves.
When the opposing team has the ball a central midfielder may drop back to protect the goal or move forward and press the opposition ball-carrier to recover the ball. A centre midfielder defending their goal will move in front of their centre-backs in order to block long shots by the opposition and possibly track opposition midfielders making runs towards the goal.
The 4–3–3 and 4–5–1 formations each use three central midfielders. The 4−4−2 formation may use two central midfielders, and in the 4–2–3–1 formation one of the two deeper midfielders may be a central midfielder.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』