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Shayna Jack
Shayna Louise Jack OAM (born 6 November 1998) is an Australian swimmer. She won gold medals in Women's 4 × 100 metre freestyle relay and Women's 4 × 200 metre freestyle relay at the 2024 Paris Olympics.
From 2019 to 2021, Jack served a 24-month competition ban for an anti-doping rule violation relating to unintentional use of Ligandrol.
Jack was born in Brisbane. She started swimming at the age of 18 months, after her parents thought it would be helpful to teach her and her siblings how to be safe in water. She grew to enjoy the experience and at age 10, told her parents she wanted to be an Olympian.
At the 2014 Junior Pan Pacific Swimming Championships, held in August in Kihei, United States, 15-year-old Jack won a gold medal in the 4×100 meter freestyle relay with a Championships record time of 3:39.73, the gold medal in the 100 meter freestyle with a 54.82, the silver medal in the 200 meter freestyle with a 1:59.48, a silver medal in the 4×200 meter freestyle relay, and placed fifth in the 50 meter freestyle.
Jack pulled out of the 2019 World Aquatics Championships days before it started, citing "personal reasons". It was later revealed that Jack had tested positive for the anabolic agent ligandrol, which is popular with bodybuilders, during an out-of-competition test held by the Australian Sports Anti-Doping Authority (ASADA); a follow-up sample further confirmed the banned substance in her system, and she was subsequently suspended by Swimming Australia and investigated by ASADA. She posted on Instagram saying that she "would never intentionally take a banned substance that would disrespect my sport and jeopardise my career". The investigation by ASADA was ongoing as of 29 July 2019.
The result of the investigation was unintentional ingestion of ligandrol by Jack and a 24-month suspension by the Court of Arbitration for Sport running from 12 July 2019 through 11 July 2021 for the anti-doping rule violation. In September 2021, after Jack served the entirety of the imposed suspension, the Court of Arbitration for Sport upheld the suspension as served in full when challenged by Sport Integrity Australia and that Jack could return to competition.
In May, at the 2022 Australian Swimming Championships, held in Adelaide, Jack achieved 2022 World Aquatics Championships and 2022 Commonwealth Games qualifying times in two individual events, winning the 50 metre freestyle with a time of 24.14 seconds, and placing second in the 100 metre freestyle behind Mollie O'Callaghan with a time of 52.60 seconds.
At the 2022 World Aquatics Championships, with swimming competition contested at Danube Arena in Budapest, Hungary in June, Jack won her first medal of the championships in the 4×100 metre freestyle relay, splitting a 52.65 for the fourth leg of the relay to help win the gold medal in a final time of 3:30.95. She won her second and final medal three days later in the 4×100 metre mixed medley relay, swimming the freestyle portion of the finals relay in 52.92 seconds to contribute to the silver medal-winning time of 3:41.34 along with finals relay teammates Kaylee McKeown (backstroke), Zac Stubblety-Cook (breaststroke), and Matthew Temple (butterfly).
Shayna Jack
Shayna Louise Jack OAM (born 6 November 1998) is an Australian swimmer. She won gold medals in Women's 4 × 100 metre freestyle relay and Women's 4 × 200 metre freestyle relay at the 2024 Paris Olympics.
From 2019 to 2021, Jack served a 24-month competition ban for an anti-doping rule violation relating to unintentional use of Ligandrol.
Jack was born in Brisbane. She started swimming at the age of 18 months, after her parents thought it would be helpful to teach her and her siblings how to be safe in water. She grew to enjoy the experience and at age 10, told her parents she wanted to be an Olympian.
At the 2014 Junior Pan Pacific Swimming Championships, held in August in Kihei, United States, 15-year-old Jack won a gold medal in the 4×100 meter freestyle relay with a Championships record time of 3:39.73, the gold medal in the 100 meter freestyle with a 54.82, the silver medal in the 200 meter freestyle with a 1:59.48, a silver medal in the 4×200 meter freestyle relay, and placed fifth in the 50 meter freestyle.
Jack pulled out of the 2019 World Aquatics Championships days before it started, citing "personal reasons". It was later revealed that Jack had tested positive for the anabolic agent ligandrol, which is popular with bodybuilders, during an out-of-competition test held by the Australian Sports Anti-Doping Authority (ASADA); a follow-up sample further confirmed the banned substance in her system, and she was subsequently suspended by Swimming Australia and investigated by ASADA. She posted on Instagram saying that she "would never intentionally take a banned substance that would disrespect my sport and jeopardise my career". The investigation by ASADA was ongoing as of 29 July 2019.
The result of the investigation was unintentional ingestion of ligandrol by Jack and a 24-month suspension by the Court of Arbitration for Sport running from 12 July 2019 through 11 July 2021 for the anti-doping rule violation. In September 2021, after Jack served the entirety of the imposed suspension, the Court of Arbitration for Sport upheld the suspension as served in full when challenged by Sport Integrity Australia and that Jack could return to competition.
In May, at the 2022 Australian Swimming Championships, held in Adelaide, Jack achieved 2022 World Aquatics Championships and 2022 Commonwealth Games qualifying times in two individual events, winning the 50 metre freestyle with a time of 24.14 seconds, and placing second in the 100 metre freestyle behind Mollie O'Callaghan with a time of 52.60 seconds.
At the 2022 World Aquatics Championships, with swimming competition contested at Danube Arena in Budapest, Hungary in June, Jack won her first medal of the championships in the 4×100 metre freestyle relay, splitting a 52.65 for the fourth leg of the relay to help win the gold medal in a final time of 3:30.95. She won her second and final medal three days later in the 4×100 metre mixed medley relay, swimming the freestyle portion of the finals relay in 52.92 seconds to contribute to the silver medal-winning time of 3:41.34 along with finals relay teammates Kaylee McKeown (backstroke), Zac Stubblety-Cook (breaststroke), and Matthew Temple (butterfly).