[2] In 2021, he competed in the men's triathlon at the 2020 Summer Olympics held in Tokyo, Japan.

[4] He won a bronze medal in the men's triathlon at the 2022 Commonwealth Games.

[6] Hauser competed at the 2022 Birmingham Commonwealth Games where he finished third in the individual event and was also part of the Bronze medal winning Mixed Relay team, alongside Sophie Linn, Jacob Birtwistle and Natalie Van Coevorden.

[5] At Super League Triathlon London 2022 Hauser was wrongly identified as Jamie Riddle and penalised for false starting, resulting in a time penalty.

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