ILS Ant -Doping Rules 2021 Page 28 of 64    10.2.1   The period of Ineligibility , subject to Article 10.2.4,  shall be four (4) years where:   10.2.1.1   The anti -doping rule violation does not involve a Specified Substance  or a Specified Method , unless the Athlete  or other Person  can establish that the anti -doping rule violation was not intentional.40  10.2.1.2   The anti -doping rule violation involves a Specified Substance  or a Specified Method  and ILS can establish that the anti -doping rule violation was intentional.