In 2015, Aidan won gold at light welterweight at the Commonwealth Youth Games.

Aidan also competed in the 2022 Commonwealth Games in Birmingham where he won Gold alongside his sister Michaela Walsh,[3] who is also a champion amateur boxer.

[4][5][6] Walsh competed in the men's welterweight competition at the Tokyo 2020 Olympics and won a bronze medal.

[7] He lost in the first round at the 2024 Summer Olympics in Paris, going down 4:0 to Makan Traore from France.

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