[1] Grzeskowiak's first state selection for the ACT was in 2014 in the women's youth eight contesting the Bicentennial Cup at the Interstate Regatta within the Australian Rowing Championships.
[3][4] Grzeskowiak raced in Capital Lakes colours in composite Canberra crews contesting the U23 double and quad scull events at the 2014 Australian Rowing Championships.
[9] Grzeskowiak made her Australian representative debut at the 2016 World Rowing U23 Championships in Rotterdam for which she was selected as Australia's single sculler.
[10] In 2019 Grzeskowiak was selected in the Australian senior women's quad scull with Katrina Bateman, Rowena Meredith and Fiona Ewing.
[10] In that same crew Grzeskowiak was selected to race Australia's quad scull at the 2019 World Rowing Championships in Linz, Austria.