Diving's Scoring: Seven Judges, Three Scores Kept, and a Multiplier

Judges score one thing only

A diving judge assesses execution, from 1 to 10 in half points. Nothing else.

They do not decide how hard the dive was. That number — the degree of difficulty — is determined before the dive happens, from a published table, based on the dive’s components: the group, the number of somersaults and twists, the body position, and the height.

So a judge watching a difficult dive and an easy one applies the same standard to both. A perfectly executed simple dive can score 9.5s, and a slightly imperfect hard one can score 7s — and the hard one will usually still win, because of what happens next.

The multiplier does the comparing

Drop the two highest and two lowest of the seven scores. Add the remaining three. Multiply by the degree of difficulty.

That structure separates two questions that most judged sports mix together.

How good was it? — decided by people, live, watching.

How hard was it? — decided in advance, by a table, with no discretion at the event.

Compare gymnastics’ code of points, where a routine’s difficulty is also declared in advance but is assembled from what the athlete actually performs, and artistic swimming, where a declared difficulty can be stripped by a base mark if the element was not performed as stated.

Diving’s version is the cleanest of the three. A dive is a single, discrete, announced action. Either you performed the dive you announced or you did not — and if you attempt something different, it is scored as a failed dive rather than credited at a different difficulty.

Why drop four of seven

Discarding the two highest and two lowest leaves only three contributing scores from seven judges — an unusually aggressive trim.

Diving has a specific reason for it. A dive lasts under two seconds, and judges sit at different angles to a rotating body entering water at speed. Genuine disagreement is not a sign of bias; it is the expected outcome of a very short event viewed from several positions.

Trimming both ends hard removes the judge who caught the entry from a bad angle and the judge who happened to see it perfectly, leaving the consensus middle.

It is the same instrument as ski jumping and snowboarding, applied more severely because the event is shorter than in either.

Synchronised diving splits the panel by job

Eleven judges. Three score the execution of one diver. Three score the execution of the other. Five score the synchronisation of the pair.

That division matters because the three things are genuinely separate. Two divers can each perform beautifully and be out of time with each other; they can be perfectly matched and both slightly wrong.

Assigning judges to a single diver also removes a practical problem: a judge asked to watch two bodies simultaneously will watch the one nearer them, and both divers deserve to be seen.

Note the weighting. Five of eleven judges assess synchronisation — more than assess either individual. In a synchronised event, being together is not a tie-breaker; it is the largest single component.

The 0.6 is arithmetic, not judgement

Remove the highest and lowest from each group, and five scores survive rather than three.

Five scores out of ten produce a larger total than three do, so the sum is multiplied by 0.6 before the degree of difficulty is applied — bringing synchronised scores onto the same scale as individual ones.

Three-fifths of five is three. The multiplier exists purely so that a synchronised score and an individual score are comparable numbers, and it carries no judgement at all.

It is a small thing, and it is the kind of detail that separates a scoring system that was designed from one that accumulated.

What the system is optimised for

Read together, diving’s rules describe a sport that decided difficulty should not be an opinion.

The table is published. The dive is announced in advance. The judges score only what they can see. The multiplier is arithmetic.

That leaves a narrow band in which judgement operates — the quality of two seconds of movement — and everything else is fixed before anybody enters the water.

For the rest of the pool, see swimming rules and artistic swimming scoring.