Chino police told the San Bernardino Sun they received several calls saying a melee had broken out amid a crowd of hundreds of parents who were watching a Pop Warner playoff game at a city park on Saturday.
Sgt. Frank Mena said most of the brawlers ran from the field as police with helmets and clubs poured into the park. No one was seriously injured and no one was arrested.
Chino is in San Bernardino County 35 miles east of Los Angeles.
