205.4. Professional (high): These competitions have significant rewards and prestige.

205.4.a. Players are expected to know the rules as defined in the Core Rules and this document completely.
205.4.b. All attendees are expected to maintain the integrity of the competition and the highest standard of behavior and technically precise play.
205.4.c. Generally, violations at this level have the strictest penalties, and are covered below in X.Y.Z.