Her personal best of 12.71 at the Tokyo Olympics makes her the third fastest in Australian history.

[1] She made her junior international debut at the 2014 World Juniors in the 100m hurdles, but had to withdraw from the team when she broke her navicular bone weeks before the team departed.

Clay then completed an exercise and sports science degree in Sydney and relocated to the Gold Coast to work with Australian hurdles coach, Sharon Hannan, who had guided Sally Pearson to Olympic gold in 2012.

The following year, she opened her season with 12.84 in Brisbane and followed this with a 12.72 in Canberra, both meeting the automatic qualifying standard for the 2020 Tokyo Olympics.

[2] At the Tokyo Olympics Clay ran 12.87 seconds to finish second in her heat and reach the semi-finals, where she ran a personal best of 12.71 for third,[3][4] which was not fast enough to progress to the final.