No Fault or  Negligence : The Athlete  or other Person's  establishing that he or she did not know or suspect, and could not reasonably have known or suspected even with  IWWF Anti -Doping Rules 2 021 84  the exercise of utmost caution, that he or she had Used  or been administe red the Prohibi ted Substance or Prohibited Method  or otherwise violated an anti -doping rule.