Shayna Jack’s bizarre blender defence for failed doping test

Australian swimmer Shayna Jack has finally revealed how she believes the banned substance ligandrol entered her system.

Shayna Jack's bizarre blender defence.

After her successful appeal to the Court of Arbitration for Sport (CAS), Australian swimmer Shayna Jack has revealed how she believes the banned drug ligandrol entered her system.

Jack returned a positive test for the banned substance in July last year, and was immediately withdrawn from the 2019 FINA World Championships.

She was promptly given a career-ending four-year ban for the failed doping test.

Ligandrol, also known as or LGD 4033, is a black market muscle-builder known to improve your appearance without the unwanted side effects experienced with steroid use.

Jack has repeatedly pleaded her innocence, and the Swiss-based CAS decided to cut the 22-year-old’s ban in half on appeal, meaning she will be allowed to return to the pool next year.

Kayo is your ticket to the best sport streaming Live & On-Demand. New to Kayo? Get your 14-day free trial & start streaming instantly >

Although Jack remains uncertain about how she ingested the substance, she suggested three possible sources to the CAS, as reported by The Daily Telegraph.

She told the court her supplements might have been contaminated in the manufacturing process, while also suggesting a blender used by her partner and brother could have been contaminated with ligandrol.

Lastly, Jack told the court she might have come into contact with the substance while using a public pool or gym in Townsville or Cairns.

Shayna Jack during the Australian Dolphins team training camp.

READ MORE: ‘Gross’ aspect of Aussie star’s doping saga

Although there was no evidence any of these theories were accurate, the CAS opted to slash two years off her ban, 17 months of which has already been served.

“The Sole Arbitrator in charge of this matter found, on the balance of probabilities, that Shayna Jack did not intentionally ingest ligandrol and considered that she had discharged her onus of proving that the anti-doping rule violation was not intentional,” CAS said in its ruling.

“As a consequence, the Sole Arbitrator imposed a reduced period of ineligibility of two years, commencing on the date of her provisional suspension.”

If she qualifies for the Dolphins, the earliest Jack could represent Australia again is at the world championships in Japan in May 2022.

Olympic gold medallist Cate Campbell told the court she did not believe Jack would use performance-enhancing drugs.

“In my years of knowing Shayna I have never witnessed any behaviour that would suggest she would knowingly take a prohibited substance,” Campbell said, as reported by The Daily Telegraph.

“She has handled the highs and lows that sport offers with class and dignity and has always conducted herself with the utmost integrity.”