Explaining VAR and concussion protocol

I need to be concise while explaining VAR and reasons for not intervening. The IFAB Laws detail terms like careless, reckless, and excessive force. If there’s ball-to-head contact, it’s typically play on. Accidental contact isn’t a foul, while an elbow might indicate violent conduct. However, VAR may not see it as a clear error if the referee already made a judgment. If a concussion is suspected, play should stop for a head injury evaluation, and some competitions allow temporary concussion substitutes.Structuring VAR intervention explanation

First, I need to clarify which match and time the user means. It’s essential to provide general rules first. VAR can only intervene for four categories: goal, penalty, direct red card, and mistaken identity. Standard fouls (yellow) don’t trigger intervention unless there's a "clear and obvious error" or "serious missed incident." If the referee saw the incident and deemed it not a red, VAR assesses if it's threshold-worthy for review.

Regarding “爆头,” a close-range ball strike to the head isn't a foul, but forceful arm or elbow contact could lead to a red card for violent conduct. Factors include point of contact, speed, and intentions. If VAR didn’t intervene, it might be because the referee deemed it normal.Analyzing contact and VAR protocols

I’m considering that the contact in question likely isn’t enough for a red card—probably just a yellow—because VAR can’t upgrade a non-red decision unless there’s a clear reason. There may not be any applicable penalty incidents if the ball is out of play or replay angles are inconclusive. Intervention would be justified if there was excessive force like elbowing or a serious missed red.

For concussion concerns, safety protocols must be followed, including stopping play for checks. I can ask the user if they prefer a brief write-up, a complaint, or a clip review, and I can suggest they clarify if they meant “手球” or “爆头” regarding contact with the head.Requesting a clip upload

I can ask the user to upload a short clip or a frame for review. It's important to note that I shouldn't run shell commands for this task. Keeping it simple and clear is key, so I’ll make the request friendly and straightforward. That way, the user knows exactly what I'm looking for and can provide the necessary information easily. Let's ensure the communication is concise and to the point!