Shayna Jack: Australian swimmer thought about quitting after drugs ban

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Image caption, Shayna Jack has qualified for the 2022 Commonwealth Games in Birmingham after returning from a ban

Australian Shayna Jack said she thought about quitting before returning to the pool after a drugs ban and qualifying for the Commonwealth Games.

Jack, now 23, was banned for four years after testing positive for muscle growth agent ligandrol in June 2019.

Her suspension was halved on appeal and she qualified for Birmingham 2022 after finishing second in the 100m freestyle at the Australian championships.

"I think I proved my point," said Jack, who burst into tears in the pool.

"But I will continue to fight back and do what I do best, which is racing, all the way through to Paris [2024 Olympics].

"I just wanted to be here and stand behind those blocks with my head held high and swim my race.

"I had so many emotions going through my body and I'm just glad to touch in that time and get myself back on the team."

Jack has always pleaded her innocence and claimed not to have taken the drug intentionally.

Sport Integrity Australia, the country's anti-doping authority, fought to have the full ban reinstated but the Court of Arbitration for Sport (CAS) threw out its challenge last September.

"I wanted to quit, I wanted to move on and just give it all up," Jack told Amazon Prime.

"I guess the only reason I didn't was because the people who knew my goals and my dreams reminded me that I shouldn't, and I should fight to the end and prove everyone wrong."

Stubblety-Cook breaks men's 200m breaststroke world record

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Image caption, Zac Stubblety-Cook is the only Australian to hold a current men's swimming long-course world record

Olympic 200m breaststroke champion Zac Stubblety-Cook set a world record in the event on his way to the Australian national title at the trials.

The 23-year-old posted a blistering time of two minutes 05.95 seconds to beat the mark of 2:06.12 set by Russian Anton Chupkov at the 2019 World Championships.

"I was just trying to swim fast - I didn't think that fast. I can't really believe it, to be honest," he said.

Stubblety-Cook broke the Olympic record for the event to win gold at the Tokyo Games in 2021.

Britain's Adam Peaty holds the breaststroke world records in the 50m and 100m.