10.13  Commencement of Ineligibility  Period   Where an Athlete  is already serving a period of Ineligibility  for an anti -doping rule violation, any new period of Ineligibility  shall commence on the first day after the current period of Ineligibility  has been serve d. Otherwise, except as provided below, the period of Ineligibility  shall start on the date of the final hearing decision providing for Ineligibility  or, if the hearing is waived or there is no hearing, on the date Ineligibility  is accepted or otherwise imposed.