Tournament officials and other staff of a tournament (including the Tournament Organizer and Scorekeeper) may participate in a DCI-sanctioned tournament of which they are a tournament official or staff if (and only if) the tournament is of the following event types:
• Friday Night Magic
• Launch Party
• Magic Game Day
• Other non-Premier Magic Tournaments
If tournament officials and other staff play in the event, it must be run at Regular REL and will have its k-value set at 8. If tournament officials play in the event and the event it not one of the allowed event types list above, the event will be invalidated. Tournament officials and staff and required to officiate events fairly and without regard to their own self-interest.
PS: объяснить не просите, кому надо - тот проникнется :)