"If our security person sees a parent or spectator starting to get a bit aggro, he has the authority to go up to them and say 'Settle down, it's only junior football'. We've found that if we don't have someone to do that the parents can get a bit carried away."

Television commentator Brad Fittler, who graduated from the Penrith junior ranks to captain Australia, applauded the initiative, saying there are some parents who are living their lives through their children.

"I have clearer memories as a 10-year-old player than I do from representing Australia ... mainly bad ones ... getting chased by parents. All junior sports venues should be good environments."

It is hoped the mere presence of touchline guards will diffuse the growing hostility that has emerged on touchlines in recent seasons.

While the Penrith league has yet to encounter any full-scale flashpoints, others have not been so lucky.