a tourney director in charge of a tourney should uphold the rules and maintain integrity of the role of "tournament director" ,if he/she decides to play in the tourney he/she directs. there is rules regarding "tournament director" in the new ITSF rules ,pertaining to the "powers" of tournament director
30. Tournament Director The administration of tournament play shall be the responsibility of the Tournament Director. This includes making the draws, scheduling the events, timing matches, etc. The decision of the Tournament Director in such matters is final.
ITSF Rule Book - 17/18 - January 15, 2007