Old enough to compete, old enough to cut?

Every combat sport has thought carefully about the age at which a person may be punched. Almost none of them has written a single line about the age at which a person may stop eating in order to be punched in a lighter category.

Parents ask me the first question and never the second. They want to know whether their son is old enough to compete.

The answer is usually yes, and it is the wrong thing to have been worried about.

Those age divisions are national rather than international, and other countries organise them differently. The United States bands run narrow so that children face opponents of a similar age: eight to 14, then 15 to 16, then 17 to 18, then 19 and above.

Bouts inside the youngest group are further restricted by year of birth.

That is careful work. Somebody thought hard about a 10-year-old facing a 14-year-old and built rules to prevent it.

Now look for the other rule

There is a weight class in every one of those divisions, and a weigh-in attached to it. An 8-year-old boxer makes a category. A 14-year-old judoka makes a category.

Both stand on a scale, and if the number is wrong, both are told they cannot compete.

What does not exist anywhere is an international standard: a minimum age below which weight may not be manipulated, or a maximum percentage a growing athlete may lose. The scale applies from the first competition.

The protection does not.

There are national exceptions, and they are worth naming because they show it can be done. United States school and collegiate wrestling run minimum weight programmes. British Wrestling applies a percentage limit to juniors. ONE Championship removed dehydration cutting for everybody on its roster rather than for minors specifically.

Four or five bodies out of every federation in combat sport.

15 is a professional minimum, not a nutritional one

The Thai number deserves a paragraph on its own, because it is the clearest example of the gap.

A 15-year-old on a Bangkok card is a professional athlete by the rules of that stadium. He may be fighting several times a year, sometimes more, against opponents matched on weight. Nothing in that arrangement says anything about what he may do to make the weight, and at 15 he is in the middle of the growth period where the damage is done fastest and recovered from least.

The age limit is right for the question it answers. A parent should be asking a different one.

What the age rules are actually for

Read them as what they are: rules about contact. They exist to stop a child taking punches from someone bigger, older or more experienced, and they do that job well.

Weight cutting is a different mechanism of harm, and it arrives from a different direction. Nobody is hit. There is no incident, no stoppage, nothing for a referee to see. The cost accumulates quietly across seasons, in growth that does not happen, in a relationship with food that forms at 13, in bone that is laid down once and then not laid down again.

A referee cannot stop that fight, and the rules have not appointed anybody who can.

So who decides

In practice, the coach. Sometimes the parent. Occasionally the child, which is the worst of the three options and more common than anybody admits.

That is the honest situation, and it is why the burden sits with the adults in the room rather than with a rulebook. What that responsibility actually involves is set out in weight cutting under 18, and it is the page I would read before the next tournament rather than after it.

One line to take from this page on its own. If your child is old enough to be entered in a weight category, the sport has said nothing at all about whether he is old enough to cut into it.

That decision was left to you, whether or not anybody told you so.