This always interests me, especially if it occurs inside the box it can be a huge game changer.
Reading the 5 things listed:
1. The proximity of the offending player when the ball is struck. The closer the player is to the ball, the less time he has to react, less time to move his arms out of the way or even towards the ball. The ball struck at close range on to the arm or hand of an opposing player is less likely to be considered a deliberate act than a ball struck from distance where a player has more opportunity to move his hand out of the way.
2. The movement of the hand or arm towards the ball, or away from the ball to prevent a handball offence occurring. If a player is attempting to avoid contact with a ball which strikes his hand or arm, the ball will often ‘fall’ towards the ground. If the act is deliberate, the ball will travel at pace off the offender as his hand/arm is rigid – he is expecting to make contact with the ball.
3. Consideration of the hand or arm in the unnatural position and distinguishing whether a player is merely protecting himself, or is unable to move his arms out of the way as the ball was struck from close range. However, when a ball goes to the side or above a player, where the hand or arm moves towards the ball, that is not a natural position or a defensive reaction. In these situations it is likely to be more a deliberate act of handball.
4. Whether the player uses his hands or arms to make himself bigger to prevent the ball from going past him, either towards goal or the penalty area. This action is a deliberate attempt to handle the ball, giving the defending player an unfair advantage.
5. The consequences of the handball offense.
If a player was just in front of the goal, back the play, another player shoots from 4 yards away, the ball strikes the defenders arm thus not going into the goal, do you call a handball?
What about corner kick, defender tries to play off chest and instead ball hits off chest and arm dropping next to them, they then clear, handball?