knockdowns in the same round, or the fighter's corner throws in the towel. A fight may also be stopped if a doctor rules that continuation would be dangerous to a fighter. If neither a knockout nor a technical knockout occurs, the winner is determined by a decision. Fighters are graded on their effectiveness on attack and defense, their success in achieving and escaping submissions, and how close they have come to ending the match. Decisions generally produce a winner, but can result in a draw. A judgement of "no contest" may also be returned, if the judges suspect foul play or conclude that the fighters are not fighting sincerely. Match scoring Fighters are awarded points for their success in striking, throwing, and applying standing submission holds to their opponent. They are also given points for four categories of performance: number of times down, amount of damage done to opponent, number of clean hits, and aggressiveness. Fighters are graded from 1-10 in each category, with the difference of score in any one category being limited to 4 points. Extra points can be awarded at certain points in the match, when the referee makes certain calls. When a fighter performs a front or back throwing technique, the referee calls "shoot", denoting one of these opportunities. The other occurs when a fighter achieves a standing submission; at this point, the referee calls "catch". Fouls Foul play is recognized as the following ① to ⑬. After a warning, the fighter will receive a point deduction for further infractions. If the same fighter commits another foul, another point is deducted, and a final warning is given. If a third warning is given to the same fighter, he is disqualified and loses the fight. If the referee feels that it was not a flagrant foul, he may allow the fight to continue. 1:Headbutting the opponent. 2:Striking the opponent in the groin. 3:Biting the opponent. 4:Attacking the opponent while he is falling, or when he is getting up. 5:Attacking an opponent after the referee signals for a break. 6:Utilizing the ropes to aid one's offense or defense. 7:To insult or use offensive speech and actions towards an opponent or the referee. 8:Striking the opponent in the back of the head. 9:The act of intentionally grounding a glove or knee to the mat to defend an attack. 10:Intentionally causing the opponent to fall out of the ring. 11:Intentionally