Edge balls in a match usually meant that the ball collided with the edge of the net or the rim during flight and was judged to be a goal. In a football match, when the ball collided with the rim or the edge of the net, it was usually judged according to the specific situation. The following are some common standards: Offside: If the attacking player is standing in front of the ball and the ball is within his/her control, but there are no other players between the ball and the opponent's goal line, the player will not be offside and the goal will be valid. If the ball goes out of bounds at the edge of the net or the rim, the goal will be invalid. 3. Corner kick: When the ball collide with the goal line or the edge of the net, if the attacking player stands in the middle of the goal line and the ball is within his/her control, the goal will be valid. If the attacking player is within the control of the ball and there are no other players between the ball and the opponent's goal line, but the ball does not enter the opponent's goal, the goal is invalid. In the game, the referee needed to judge according to the specific situation to ensure the fairness and fairness of the game.