Glossary of Judo terminology
Ippon gachi (Win by ippon)
The "Ippon" is a sign used to indicate a contest decision. An "Ippon gachi" (Win by ippon) is to win the bout by successfully executing a Waza which merits an Ippon decision. An Ippon decision is awarded at the following times: When a contestant who successfully uses a Nage waza (Throwing techniques) to throw his opponent into a nearly supine posture, when the opponent says "Maitta" (Give up), when pinning the opponent with an Osae komi waza (Hold-down techniques) for 30 continuous seconds, and when a Shime waza (Strangling techniques) or Kansetsu waza (Joint locks) is performed with effective results. A "win by default" (non-appearance of opponent), "win by withdrawal" (opponent withdraws during the contest), "win by injury", and a "win by opponent's disqualification" are all equivalent to an "Ippon gachi" (Win by ippon).