FIFA’s Laws of the Game states that on a Corner Kick “the ball is placed inside the corner arc…”. My question is: Does “inside the corner arc” mean that the ball cannot touch any part of the goal line, side line or arc marking? Or does it mean that any part of the ball touching any part of the goal line, side line or arc marking is considered “inside the arc”? Inside the “Field of Play” is any part of the ball still touching the goal line or side line. Would not the same interpretation hold true for the goal line, side line or corner arc marking when taking a Corner Kick? For that matter, would the same hold true for the placement of the ball for a Penalty Kick, i.e. the ball can be placed anywhere, as long as the ball is still touching the Penalty Kick marking?USSF answer (April 16, 2007):
On a corner kick, the ball need only break the plane of the arc or the touch- or goal lines to be considered in the proper position.
On a penalty kick, the ball must be ON the penalty mark.