បាល់ទាត់ផ្សាយផ្ទាល់ Things To Know Before You Buy
A modern down indicator box is mounted with a pole which is utilized to mark the current line of scrimmage. The number about the marker is changed employing a dial. Officials are liable for imposing video game principles and monitoring the clock. All officials carry a whistle and use black-and-white striped shirts and black hats aside from the refe