What is randori?

What is What is randori??

Randori (乱取り) is free practice — judo with a partner at match pace, usually without an official referee.

How does What is randori? work?

After technique and ukemi, randori is the core of class. Beginners start light with one throw; advanced players work combinations and defence. In Amsterdam randori is often the final twenty minutes of training.

randori in Amsterdam dojos

In Amsterdam dojos randori shows up as free practice with agreed intensity. Coaches explain it with theme randori versus free randori, and mainly correct shiai ego inside learning randori. This page translates official frames (JBN/IJF/Kodokan where relevant) into class practice without lifting federation prose.

Meaning of randori

randori centres on free practice with agreed intensity. Concretely on the mat: theme randori versus free randori. The idea is not separate from ukemi, gripping and respect — knowing only the definition misses how coaches place it in the syllabus. Historically and institutionally we point to Kodokan and/or IJF frames; for Dutch exams JBN leads. We summarise in our own words. After class write one sentence: which cue did you hear for randori? That sentence is homework — not a random YouTube compilation.

randori in the weekly class

A typical Amsterdam class builds randori in layers: short briefing, slow partner drill, pace, then apply in randori or an exam-like demo. Centrum groups have less running space; Zuidoost more often has longer lines — teaching adapts to the hall. For youth, repetition with game forms matters; for seniors, transfer into shiai or kata. Ask your sensei which block touches randori that week. Parents: stay sideline, do not photograph randori without permission, and discuss randori positively — mistakes belong to learning.

Competition, exams or etiquette around randori

Depending on the concept, randori touches shiai rules, kyu/dan requirements or etiquette. Check current IJF documents for scoring/penalties and JBN for graduations. Noord-Holland clubs translate that into pools and exam evenings on this site’s calendar. Separate ‘what is legal in contest’ from ‘what we practise in class’. Class intensity can be lower to learn randori safely. When unsure, the newest official source plus your sensei wins — not a forum thread.

Safety and misconceptions about randori

The biggest risk around randori is shiai ego inside learning randori. Say that aloud before you train harder. Safety is part of the concept, not an appendix. Misconception: that randori arrives ‘by itself’ after enough videos. Without feedback from a qualified coach you groove errors. Second misconception: that every child needs the same pace. Injury or fear? Cut volume and rebuild from ukemi and basic gripping before randori returns at full speed.

Choosing and deepening randori in Amsterdam

Use the dojo guide to find a club where randori sits seriously in the programme. Pair with calendar clinics and related knowledge pages. Sources below support claims; we do not copy them verbatim. Trial checklist: how they explain randori, how they correct, how safe the mat feels. Two trials beat ten landing pages. Keep returning to free practice with agreed intensity — that is the through-line, not scoreboard stress.

Practice block 1: randori

Week plan randori (free practice): class 1 isolates intensity agreement; class 2 applies randori in a theme drill; class 3 you observe others and write three cues. Sunday: five-sentence reflection — no video binge.

Practice block 2: randori

Sensei talk on randori: one question on free practice and one on how intensity agreement fits your age/belt. Write answers verbatim as a monthly checklist.

Practice block 3: randori

Risk card for randori: failure scenarios plus countermeasures, shared with a fixed partner. Update after near-misses. Safety is part of the concept.

Practice block 4: randori

City guide: find an Amsterdam club/clinic that names randori explicitly, bring a notebook, compare cues to your club. Facts rest on sources below; feel comes from the mat.

Practice block 5: randori

Misconceptions: video alone does not make randori; every child has a different pace; scoreboard stress is not pedagogy. Replace those myths with one measurable drill per week.

Practice block 6: randori

Source hygiene for randori: pick JBN/IJF/Kodokan by relevance, rewrite claims, on conflict the newest official page plus your sensei wins. No copy-paste of federation prose.

Practice block 7: randori

Deepening case for randori: describe a concrete Amsterdam class situation (youth or senior) where this concept went wrong, which cue the sensei gave, and how the next three sessions were adapted. Write at least eighty words in your log; without that case theory stays floating. Then attach a measurable drill (time, reps or checklist) that applies only to this concept.

Practice block 8: randori

Check moment for randori: have a partner quiz you with five open questions that cannot be answered yes/no. Note gaps. Schedule a remedial drill within seven days. This check does not replace a federation exam but prevents discovering shaky definitions only on exam night.

Practice block 9: randori

Integration with neighbouring concepts around randori: pick two knowledge pages that logically sit beside it and write a paragraph on how they reinforce each other on the mat. Read that paragraph aloud to your sensei for correction. That builds a network of ideas instead of isolated lemmas.

Practice block 10: randori

Quality bar for randori: state when you are satisfied (for example three clean reps, a faultless etiquette sequence, or a clear parent explanation). Share that bar with your coach. Without your own bar, progress stays vague and you only compare yourself to others.

Practice block 11: randori

Closing depth randori (Amsterdam): tie this concept to a fixed moment in the weekly class — briefing, drill or randori — and protect that moment from ad-hoc tournament prep. Write a twelve-sentence letter to your future self about what you want to improve in three months around this exact concept, including ukemi limits, grip agreements and how you ask for feedback. Reread the letter monthly. Add a five-item yes/no checklist that applies only to randori, have your sensei initial it, and keep it with your judogi. That moves the lemma from "read on a website" to "drilled behaviour".

Practice block 12: randori

Second closing block randori: run a fifteen-minute mini-clinic with two partners where you teach what you understand so far. Teaching exposes gaps faster than following. Note three questions you could not answer and schedule within ten days a look at the official sources at the bottom of this page plus a club question. End with a safe cool-down matching the load of randori — no bonus throws after fatigue.

Examples

• Tachi-waza randori — standing throws
• Ne-waza randori — groundwork
• Shiai-geori — timed match simulation

Our sources

• Kodokan Judo Institute
• IJF — Documents & rules
• Judo Bond Nederland