How MMA scoring works

A fight is scored round by round by three judges sitting on different sides of the cage. Nothing carries over: a round won narrowly counts the same as a round won easily, and the fight is decided by adding the rounds up at the end.

The winner of a round must get ten points and the loser gets nine or fewer, which in practice means a small number of scores do nearly all the work.

10-9

The normal round. One fighter did more, but both were in it.

10-8

Clear dominance, real damage, or near-total control. Judges are instructed to use it more than they once did, and the gap between a 10-9 and a 10-8 round is often what decides a close fight.

10-10

Genuinely nothing between them. Rare, and judges are discouraged from reaching for it.

10-7

Overwhelming and one-sided — about as close to a stoppage as a round gets without one. Very rare.

Points can also come off for a foul, at the referee's instruction rather than a judge's discretion. In a three-round fight a deduction is enormous: it can hand away a round a fighter clearly won.

The criteria are ranked, and the ranking matters more than most viewers realize. Effective striking and grappling comes first. Only if that is genuinely close do judges move to effective aggressiveness, and only if that is also close does cage control come into it.

• Effective striking and grappling: what landed, and what it did. Damage and real threats count; volume that lands on gloves and forearms does not count for much.
• Effective aggressiveness: moving forward with purpose. Walking forward and missing is not aggression, it is a target.
• Cage control: dictating where the fight happens. A tiebreaker of last resort, not a category of its own.

Control time is not a score. Holding someone against the fence or lying in their guard without threatening anything is control without effect, and judges are told to weigh what the control produced rather than how long the clock ran.

The most useful test is a question: would the round have ended if it had gone on another minute? If the answer is probably yes — someone badly hurt, or held somewhere they could not escape while taking damage — that is a 10-8. If the answer is no, it is a 10-9, however one-sided it felt to watch.

They are watching from three positions, and a fight looks different from each one — a fighter with their back to one judge can hide a round's worth of work from them. Add the honest ambiguity in the criteria, and a split decision stops looking like incompetence and starts looking like what it is: a close round scored three times.

The practical consequence is worth carrying into every fight you watch. In three rounds, two wins it, so a fighter who banks the first two can spend the third defending. In five, the middle rounds are where fights are quietly lost by fighters saving themselves for a finish that never comes. Plenty of fighters do not fight like they know the arithmetic.