Jack offers three sources of possible contaminationCas has halved four-year ban for positive Ligandrol testAustralian swimmer Shayna Jack suggested a contaminated blender used by her partner or brothers as a possible source of her positive drugs test. But Jack told her appeal to the Court of Arbitration for Sport that she probably will never know how the banned substance Ligandrol entered her system.
Jack appealed to CAS against a four-year suspension imposed after she tested positive to Ligandrol before last year’s world championships. Cas last week reduced her ban to two years, finding Jack did not knowingly ingest the substance. Cas has published its full decision in Jack’s appeal, noting she suggested three possible sources for her positive test.