Overview of Competition
This section needs to be cleaned up! The explanation between IJF rules and Japan rules will confuse beginners! Some of these rules are outdated as well.
--Pat 08:21, 15 February 2010 (UTC)
Competition, also known as shiai (試合), is a good way to measure ones own ability. By competing, one can determine their own weaknesses and strengths. This is why regular participation in competitions are necessary for improvement in judo.
Note: The rules differ between the International Judo Federation and Japan. Some rules also differ between organizations as well.
PointsThere are four scores in judo. An ippon (one point) is a winning score. A waza-ari (half point) is near ippon. If the contestant is awarded two waza-ari, they will win by waza-ari-awasete-ippon (two waza-ari make ippon). Yuko (effective), and koka (minor score) are different from waza-ari in that no amount of yuko or koka will be equivelent to the next higer score. A yuko is better than a koka. One waza-ari is better than any yuko and one yuko is better than any koka. If the match is not decided by an ippon, then it will be decided based on who has better scores. [ More ]
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Penalties & Prohibited ActsPenalties are important in competition in order to keep all competitors safe and in the spirit of judo. There are also penalties to keep players from being too passive or overly defensive. As long as the contestant plays good, safe judo, and does not stall, they shouldn't get any penalties. There are four penalties given in judo (from least to most severe): shido, chui, keikoku, and hansoku-make. However, starting in 2003, International Judo Federation simplified the rules to use only shido and hansoku-make. Once a contestant recieves hansoku-make, the contestant is disqualified and excluded from the tournament. [ More ]
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Equivalence
| Translation | Minor Score | Effective | Near Ippon | Two Waza-ari make an Ippon | One Point |
|---|---|---|---|---|---|
| Score | Koka (効果) | Yuko (有効) | Waza-ari (技あり) | Waza-ari-awasete-ippon (技あり合わせて一本) | Ippon (一本) |
| IJF | 1st Shido | 2nd Shido | 3rd Shido | Hansoku-make (反則負け) | |
| Japan | Shido (指導) | Chui (注意) | Keikoku (警告) | ||
| Translation | Guidance | Warning | Serious Warning | Defeat by Decision | |
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Scoreboard
To the right is an example scoreboard. Notice it displays the score for each contestant, and if there is a penalty. In this example, blue has a penalty equivelent to yuko.
Competition Area
The competition area is divided in to 3 zones: the contest area, danger zone, and the safety area. Inside the contest are are two strips which denotes were the contestants bow at the beginning and end of the match.
_competition_area.png)
Judo UniformContestants must wear a judogi which is in good clean condition. The gi must be dry and without odor. Female contestants must also wear a plain white or off-white short sleeve t-shirt which is long enough to be tucked in to the pants. In international competition, the first contestant wears blue and the second wears white or off-white. Local competitions usually have different rules such as one contestant wearing a red belt and the other wearing a white belt. [ More ]
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HygieneEvery contestant should also have good hygiene. Nails of the hands and feet should be cut short. If the contestant has long hair, then it should be tied so it won't cause any inconvenience. |
The Basics
- Competition Overview
- Points & Penalties
- Tournament formats
- Uniform regulations
- Competition area
- Referee calls
References
- "IJF Referee Rules." International Judo Federation. Accessed on August 5, 2005.