8.4 Single Hearing Before CAS   Anti-doping rule violations asserted against International -Level Athletes , National -Level  Athletes  or other Persons  may,  with the consent of the Athlete or other Person, the IOF  (where it has Results Management  responsibility in accordance with Article 7) and WADA, be heard in a single hearing directly at CAS.37   ARTICLE 9  AUTOMATIC DISQUALIFICATION OF INDIVIDUAL RESULTS    37  [Comment to Article 8.4: In some cases, the combined cost of holding a hearing in the first instance at the international or national level, then rehearing the c ase de novo before CAS can be very substantial.