]1PARTArticle 1: Definition of DopingArticle 2: Anti-Doping Rule Violations19 World Anti-Doping Code •20092.1 Presence of a Prohibited Substance or itsMetabolite s or Marker s in an Athlete ’s Sample2.1.1 It is each Athlete ’s personal duty to ensure thatno Prohibited Substance enters his or her body.Athlete s are responsible for any ProhibitedSubstance or its Metabolite s or Marker s foundto be present in their Sample s. Accordingly, it isnot necessary that intent, fault, negligence orknowing Use on the Athlete ’s part bedemonstrated in order to establish an anti-doping violation under Article 2.1.