Shayna Jack is from Queensland, Australia.
2015 FINA World Junior Swimming Championships
Jack represented Australia swimming the 30m, 100m and 200m freestyles. Jack finished third in the 50m free with a final time of 25.54. Jack finished fifth in the 100m Freestyle with a 55.38, just 0.6 seconds out of medal contention. Clocking a 2:03.13, Jack also swam the 200m freestyle.
2017 Australian National Swimming Championships
Jack, who trains with Bronte and Cate Campbell, took down Bronte’s national 18-years record twice on Sunday. In the morning heats, Jack clocked a 53.60 to make the finals. In the finals she placed fourth, securing a place on Australia’s World Championship Team and broke the record again, lowering it to 53.40.
2017 World Championships
Jack swam the leadoff leg on Australia’s silver medal winning 4x100m freestyle relay splitting a 53.75. Teaming with Bronte Campbell, Brittany Elmslie and Emma McKeon, the Aussies beat bronze medal winners, the Netherlands, by 0.63 seconds.
2018 Pan Pacific Championships
On day 2, Shayna swam the 100 free, qualifying 5th in prelims, but fell to 7th (53.74) in finals. On day 3, Jack went 2nd on the women’s 4×100 free relay, splitting 53.10 to help the Aussie’s secure gold in a pan pac record of 3:31.58.