]2.1.2  Sufficient proof of an anti-doping rule violation under Article 2.1 is established by any of the fol-lowing: (i) the presence of a Prohibited Substance or its Metabolites or Markers in the Athlete’s A Sample where the Athlete waives analysis of the B Sample and the B Sample is not analysed; (ii) where the analysis of the Athlete’s B Sample confirms the presence of the Prohibited Substance or its Metabolites or Markers found in the Athlete’s A Sample; or (iii) where the Athlete’s A or B Sample is split into two parts and the analysis of the confirmation part of the split Sample confirms the presence of the Prohibited Substance or its Metabolites or Markers found in the first part of the split Sample or the Athlete waives analysis of the confirmation part of the split Sample.