What is the rule on headers that are done in close proximity to another player? I thought the rule was that you had to jump up straight in the air and come down straight if close to another player? I have only seen it called once in over 10 years of club soccer but am concerned because of the concussion risk. For example in a recent game a much taller player jumped at an angle towards my dd to head the ball. My dd saw this coming and thanks to another player holding her down at the shoulder, was not able to jump. The first player completely missed the ball but landed on my dd’s head. Thankfully it was not head to head and both girls were unhurt. No call. This happened in the box but I was more concerned with the ref explaining the danger of the behavior. Am I mistaken on the rule? Thank you.