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A knee-on-knee collision is not automatically a major penalty. Officials apply the rulebook for that competition: NHL Rule 50 lets the referee choose a minor or major based on severity, while IIHF and USA Hockey rules tie a major to reckless endangerment. The rules differ, so the applicable league and season matter.
What counts as kneeing?
The rules describe kneeing as an action by a player who leads with the knee, or in some cases extends the leg, to make contact with an opponent. That is different from simply observing that two players’ knees collided: the contact alone does not establish that one player committed kneeing.
The NHL’s 2025-26 Rule 50.1 defines kneeing as “the act of a player leading with his knee and in some cases extending his leg outwards to make contact with his opponent.” NHL Official Rules 2025-2026, Rule 50.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsHow the major threshold differs by rulebook
The governing body’s rule controls the call. These provisions share a focus on the kneeing action but do not set out identical penalty language.
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| Competition and season | Major threshold | What accompanies or may accompany it |
|---|---|---|
| NHL, 2025-26, Rule 50 | The referee may assess a minor or major based on the severity of the kneeing. | A major is accompanied by a game misconduct. The referee may assess a match penalty if, in the referee’s judgment, the player attempted to or deliberately injured the opponent by kneeing. NHL Official Rules 2025-2026, Rule 50. |
| IIHF, 2025-26, Rule 50 | A major and automatic game misconduct may be assessed when the referee judges that kneeing recklessly endangered the opponent and a minor would not sufficiently sanction the player. | The rule also permits supplementary discipline by the proper authorities. IIHF Official Rule Book 2025/26, Rule 50. |
| USA Hockey, 2025-29, Rule 628 | A major plus game misconduct is assessed for reckless endangerment resulting from kneeing. | A match penalty for reckless endangerment may also be assessed. USA Hockey Playing Rules 2025-29, Rule 628. |
USA Hockey’s rules are published with its Rule Book & Resources. Do not transfer one governing body’s exact wording or penalty progression to another.
What officials consider under the IIHF rule
IIHF Rule 50.3 names four considerations for judging reckless endangerment: “the severity of the infraction, severity of the contact, the degree of violence and the general reprehensibility involved.” The rule also requires the referee to judge whether a minor would be insufficient to sanction the conduct. These are considerations for judgment, not a numerical formula or a checklist that automatically decides every play.
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The cited provisions do not establish that a particular approach direction, leg angle, intent finding, or injury automatically makes a kneeing call a major in every competition. Injury by itself is not listed as an automatic major trigger in these rules.
How to assess a disputed play responsibly
- Identify the competition and season. Use the applicable league or federation’s current rulebook; NHL Rule 50, IIHF Rule 50, and USA Hockey Rule 628 are not interchangeable.
- Describe the observable action. Explain whether the player appears to lead with or extend a knee to make contact, rather than treating any knee-to-knee collision as proof of a violation.
- State the rule’s threshold. For the NHL, explain the referee’s severity judgment. For the IIHF and USA Hockey, explain the reckless-endangerment language and the specific penalty progression in that rulebook.
- Separate rule text from video interpretation. A viewer can describe what the footage shows, but deciding whether the threshold was crossed in a specific incident requires the incident, relevant rules, and any official ruling or disciplinary decision.
Without footage and the applicable competition context, it is not possible to determine whether a particular hit merited a major. The rules provide standards for officials’ judgments, not a universal outcome based solely on where the players’ knees met.
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