At the 2023 NCAA Division I Outdoor Track and Field Championships, he ran 9.89 for 100 metres in the semifinals and 9.97 in the finals, the former making him the 9th-fastest runner in the world that year.

[5] At the 2019 Pan American U20 Athletics Championships, Austin won the silver medal in the long jump behind Wayne Pinnock.

[8][9] He qualified for his first collegiate nationals at the 2021 NCAA Division I Indoor Track and Field Championships, finishing 13th overall in the long jump.

In the East Preliminary Round two weeks prior, he had run 9.88 seconds for 100 m, but with a 5.5 metres/second tailwind that greatly aided the result and made it ineligible for records.

[13][14] Austin competed in the 100 m at the 2023 USA Outdoor Track and Field Championships and won his first-round heat, but he did not advance past the semi-finals.