We questioned this rule during a recent tournament. Our 10U son was losing in points and it was the 3rd period, but when the opponent made a mistake, our son took him to his back and, according to head ref that was shown the tape - should have gotten the pin - with 5 second left in the match. However, the other wrestler's coach was actually on the sidelines yelling at his kid to "scream". Which the kid did - and when the ref blew the whistle he told our coaches he had to stop it because the kid screamed. After the match, when we showed the tape to the head ref and questioned the call, we were told the match should not have been stopped because the child was not in any danger of getting hurt - only of losing the match. I understand there is a time and a place for this rule, however, I don't feel that coaches should be teaching their kids to use it as a way to avoid losing a match.