Each round gets scored based on a 10-point system. The winner of the round is usually awarded a full 10, with the other player usually scoring a 9 or sometimes an 8, too, especially if the opponent took a knee during the fight. Several things like getting knocked down or doing an unintentional foul can lose you points. If the round was fought on almost equal footing, the judges will look at other factors like clean and effective punches before they award wins and declare a round victor.