Hmm I was unawre of that rule change however the Coaches Code of Ethics in the NFHS rules "Coaches have the moral and ethical responibility of not permitting wrestlers to win matches by claiming injury unless they are injured to the extent they cannot or should not continue" I know I have see nthis several times when the kid wasn't really hurt and the coaches just let him win, I think thats wrong and very disrespectful to the sport. Getting slammed shouldn't be a disqualifier for a match. So you get your bell rung? so what? Unless you passed out and cannot see straight you need to go back out on the mat.