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Judo, wrestling and amateur boxing: a scale that keeps coming back
Professional fighters cut once and recover for a day. Olympic-style athletes make weight, compete 4 or 5 times, and in two of these three sports get weighed again while the tournament is still running. Almost none of the weight-cutting material written for combat sport accounts for that.
Judo weighs in the day before, then runs a random check on competition day where an athlete may be up to 5 percent above the category limit.
Wrestling weighs in on the morning of each competition day: scratch weight on day one with no tolerance, then a second weigh-in on day two for those still competing. At World and Continental Championships and at the Olympics there is no allowance on that second scale either.
The 2 kg tolerance people quote applies only at Ranking Series and certain international tournaments.
Amateur boxing fixes the category at the first weigh-in, where both the minimum and the maximum are checked, and then weighs in on each bout morning against the maximum only.
In all three the recovery window is hours, not a day, and it has to survive several contests.
The comparison that matters is with the professional side. A boxer weighs in on Friday afternoon and fights on Saturday night with something like a day and a half in between.
A wrestler weighs in at eight and is on the mat by 11, then does it again tomorrow.
| Sport | When | Allowance |
|---|---|---|
| Judo | Day before, plus a random check on the day | 5% above the limit at the check |
| Wrestling, day 1 | Morning, 30 minutes | None. Scratch weight |
| Wrestling, day 2 | Morning, 15 minutes, active athletes only | None at championships. 2 kg at some events |
| Amateur boxing | Category fixed at the first weigh-in, then each bout morning | Maximum only after the first |
Wrestling: the format that catches people
The 2-day format arrived on 1 January 2018, and the stated purpose was to reduce extreme cutting by splitting the tournament across 2 days.
What it produced was a second scale in the middle of a competition.
Three sports on this page, three different scales. All of them, and the professional formats too, sit in one table in the weigh-in rules reference.
Day one takes 30 minutes and there is no tolerance: the exact category weight, or you do not compete.
Day two takes 15 minutes and involves only the wrestlers still in the repechage and the finals.
The allowance on that second scale is where most people get it wrong. A 2 kg tolerance exists, but only at Ranking Series events and certain international tournaments. At World Championships, Continental Championships and the Olympic Games there is no tolerance on day two at all.
Same weight again, on legs that wrestled all of the previous day.
That is not hypothetical. At the 2024 Olympics a wrestler made day one, won 3 bouts, and was disqualified the next morning roughly 100 grams over, with no tolerance available. The arbitrator who heard the case described the consequences as draconian while noting that the rule itself was not being contested.
You cannot refill on day one the way a professional refills after a Friday weigh-in. Everything you put back has to come off again overnight, after a full day of competition, on legs that already wrestled several matches. At a championship there is no margin waiting for you in the morning. The only version of this that works is arriving at the tournament close enough to the limit that day two is a formality.
Judo: the random check
The IJF moved the official weigh-in to the day before and added a random weigh-in on competition day, where an athlete may be up to 5 percent above the upper limit of the category.
Read that as a ceiling on the refill rather than a second cut. It permits a real recovery, which the old same-day system did not, and it caps what can be regained. Five percent of a 73 kg category is a little over 3.5 kg, and that is the whole budget for the fluid, the glycogen and the food.
The catch is that it is random. You cannot plan around being selected, so you plan as though you will be.
Amateur boxing: every morning
The weight registered at the entries check and first weigh-in fixes your category for the whole tournament, and both the minimum and the maximum are controlled at that point. After that you weigh in on the morning of each day you box, and only the maximum matters.
Over it, you are out.
The consequence is the one professionals never face. You are not recovering from a cut. You are holding a weight for a week while competing, and every evening the temptation is to eat and drink normally, which puts the scale back out of reach by morning.
The way through it is in what to eat between matches at a tournament.
Anti-doping here is the real thing
This is the largest difference from the professional side and it gets underestimated constantly.
Olympic-style athletes sit under the WADA Code through their international federation and national anti-doping organisation. That means the actual WADA Prohibited List, out-of-competition testing, registered testing pools and whereabouts obligations for athletes at the top of the sport. A professional boxer might go a career without an out-of-competition test.
A national team judoka will not.
- Whereabouts and ADAMS, the rule that ends careers without anyone testing positive.
- Supplement contamination, because a squad buying products in bulk is a squad-wide exposure.
- Diuretics, prohibited at all times, and the classic mistake in a sport that weighs you every morning.
The fourth Olympic combat sport, taekwondo, uses judo's design: a day-before weigh-in and a random 5 percent check on the day. Its World and Olympic categories are on their own page.
Age changes everything
A large share of judo, wrestling and amateur boxing is competed by athletes under 18, and the rules above were written for adults. Nothing on this site about cutting applies to a growing athlete, and the reasons are set out in weight cutting under 18. The age each sport lets an athlete start competing is in old enough to compete, old enough to cut.
Amateur kickboxing runs the same tournament problem in a striking format.
For coaches running a squad
The individual approach does not scale. A squad of 15 at a multi-day tournament needs one system: category decisions taken months out, a shared plan for the days between weigh-ins, and one person responsible for what is in the bag.
Where that starts is fight camp nutrition for the training block, and choosing the division for everything upstream of it.
The two Olympic grappling sports handle weight completely differently from each other, and both differently from boxing: wrestling and judo.
Two complete sample documents are free to read before you buy anything.
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Oleksandr Foka is a sports nutritionist with over a decade in professional sport. He wrestled freestyle from the age of 4 until he was 22, competing as a medallist and champion at Ukrainian and international level, and has worked with amateur boxers since 2017, including champions and medallists at world championships. He has worked in world title camps in boxing with Oleksandr Usyk, Oleksandr Gvozdyk, Denys Berinchyk, Vladyslav Sirenko, Murodjon Ahmadaliev, Israil Madrimov, Sergiy Bogachuk, Sabirzhan Akkalykov and Abylaikhan Zhussupov, and with the Kazakhstan national boxing team and with Kazakhstan judo athletes, and currently works on the WTA tour.
Oleksandr Foka — sports nutritionist. Questions: fokaoleksandr@gmail.com
Educational content, not medical treatment. For adults 18+. Weight cutting carries real risks including dehydration, electrolyte imbalance, impaired cognition and cardiac strain. Nothing here replaces care from a physician. Rules change: confirm the current text with your federation before relying on it.