A breach of the rules due to non-minor contact between two or more opposing players is a foul.
Non-minor contact that occurs accidentally is still a foul – it does not need to be intentional. In fact there should be no intentional contact in Ultimate.
This rule was changed from the previous rulebook version
This rule was added from the previous rulebook version
This rule has updates in the next rulebook version
15.1.1.
A player intentionally initiating minor contact is still a breach of the rules, but is to be treated as a violation, and not a foul.