Below you can find the rules of K-1
• Each match is three or five rounds in duration, with each round lasting three minutes.
• The match can end by Knockout, Technical Knockout, Decision, Disqualification, Draw or No Contest.
• Both the referee and the ring doctor have full authority to stop the fight.
• The fight is scored by three judges on a ten-point must system (The winner of each round receives ten points, and the loser receives nine or less. If the round is even, both competitors receive ten points).
• If there is a draw after three rounds, the judges' scores are thrown out and one or two extra three-minute rounds are contested. The judges' decision will then come from the scoring of each extra round only. If, after the extra round(s), there is still a draw, the judges will decide a winner based on the flow of the entire match, considering even the slightest difference. A fight can only end in a draw if both fighters go down at the same time and cannot get up, or in the case of accidental injury in the late stages of the contest.
• The three-knockdown rule is in effect (three knockdowns in a round results in a technical knockout).
• The mandatory eight count is in effect (the referee must count to at least "eight" on all knockdowns).
• The standing eight count is in effect (the referee has the right to declare a knockdown on a fighter who appears to be in a dangerous condition to continue in the match).
• A fighter can be saved by the bell only in the last round.
In K-1 single elimination tournament matches:
• Each match is three rounds in duration.
• The three-knockdown rule becomes a two-knockdown rule for all matches except the final.
• One or two reserve fights are held prior to the single elimination matches. If for any reason a fighter who wins and advances through the brackets is unable to continue, a reserve match competitor, or the fighter's opponent from the most recent match, takes his place. There are certain exceptions to this rule (i.e. a fighter who lost a match by knockout might not be eligible to replace another fighter).