UWW  2021 Anti -Doping Rules  Page 7 of 66    2.3  Evading,  Refusing or Failing to Submit to Sample  Collection  by an Athlete   Evading Sample  collection; or refusing or  failing to submit to Sample collection without compelling justification after notification by a duly authorized Person.6  2.4  Whereabouts Failures  by an Athlete   Any combination of three (3) missed tests and/or filing failures , as defined in the International Standard  for Results Management , within a twelve (12) month period by an Athlete in a Registered Testing Pool.