- Refereeing regulations for International Judo Federation (IJF) competitions
- Judgment of a technique
Judgment of a technique
- Ippon from a Nage-waza
- When a contestant throws the opponent to the floor onto his back with control, considerable force, and speed.
- Ippon from a Katame-waza
- When the pinned opponent either says "Maitta" (I give up), or gives the "Maitta" signal. When a pin is maintained for 25 seconds.
- Other wins equivalent to an Ippon:
- [Fusen-gachi] (win by default [non-appearance])
- A contestant is awarded a "Fusen-gachi" if the opponent fails to appear at the contest starting line after being called 3 times at 1-minute intervals.
- [Kiken-gachi] (win by default [withdrawal])
- A contestant is awarded a "Kiken-gachi" if the opponent withdraws from the contest for any reason.
- [Sogo-gachi] (compound win)
- When one contestant has received a Waza-ari and his opponent subsequently draws 3 Shido. Or, when one contestant receives a Waza-ari after his opponent has already drawn 3 Shido. In either case, the contestant with the Waza-ari wins due to his opponent's Hansoku-make (defeat by grave infringement or accumulated light penalties).
- Waza-ari by Nage-waza
- When the executed Nage-waza falls just short of an "Ippon" in that it lacks one of the three Ippon requirements: "throwing the opponent to the floor onto his back with control", "with force", and "with speed".
- Waza-ari by Katame-waza
- When an Osae-komi-waza pin is maintained for 20 seconds or longer, but less than 25 seconds.
- Yuko by Nage-waza
- When the executed Nage-waza falls short of an "Ippon" in that it lacks two of the three Ippon requirements: "throwing the opponent to the floor onto his back with control", "with force", and "with speed".
- Yuko by Katame-waza
- When an Osae-komi-waza pin is maintained for 15 seconds or longer, but less than 20 seconds.
Koka (now abolished)
- Koka by Nage-waza
- When the executed Nage-waza had "speed" and "force", with one of the opponent's shoulders, hips, or thighs making contact with the floor.
- Koka by Katame-waza
- When an Osae-komi-waza pin is maintained for 10 seconds or longer, but less than 15 seconds.
New standard resulting from the Koka abolishment
Following the abolishment of the "Koka" in January of 2009, the "Yusei-gachi" (win by decision) criteria was changed to "Yuko or higher". Where there is no "Yuko or higher" difference in points, the winner is determined by an overtime (Golden Score).
Waza equivalent to the former "Koka" are no longer recognized. With regard to an Osae-komi, too, points are no longer awarded for a pin of less than 15 seconds.
Maneuvers on the contest area's boundary line
- For standing posture techniques (Tachi-waza), Waza points will be awarded if an uninterrupted Waza sequence (offensive or defensive) ends with any part of either contestant's body still within the contest area. However, if the Waza sequence is interrupted at any point, a "Matte" is called.
- A "Shido" will be called if a contestant moves out of the contest area when not performing a Waza (offensive or defensive), or if a contestant intentionally pushes the opponent out of the contest area (this is unchanged from the previous rules).
- The "Shido" penalty which was formerly called for standing in the danger zone for more than 5 seconds without performing an offensive or defensive maneuver, has been abolished.
Although 2 "Waza-ari" will result in an "Ippon", "Yuko" are never converted to a "Waza-ari" regardless of how many are awarded.
When a contestant is thrown in a Waza manner with a wheeling motion in the air, the "Waza" decision is based on how the contestant's body strikes the floor. If the contestant lands face down, the Waza will be judged as "not effective". Even if a thrown contestant attempts a bridge posture to avoid landing on his back, this will be recognized as an "on the back" landing, with the decision call being made accordingly.
An Osae-komi (hold-down) Waza is recognized when a contestant pins the opponent with a Kesa-gatame (scarf hold) or a Shiho-gatame (four-corner hold) from the side, from above the head, or above the body, with the opponent's back and both shoulders or one shoulder against the floor. The pin will not be recognized, however, if the pinned contestant manages to scissor the pinning contestant's leg or body with his legs.