The team won the gold medal, defeating Canada 3–2 in a penalty shoot-out following a 3–3 draw.

[3][4] Weyer made his debut for the Australian Under 21 side, 'The Burras', at the 2016 edition of the Sultan of Johor Cup, winning a gold medal.

[1] In November 2018, Weyer was named in the squad for the Hockey World Cup in Bhubaneswar, India.

[8] Weyer was selected for the Kookaburras squad for the 2024 Summer Olympics in Paris,[9][10] scoring the opening goal in Australia's 2–1 win over Ireland in the group stage.

[11] Coach Colin Batch was quoted before the Olympics that Weyer "was the best story in the team" after the defender got himself fitter and followed up with an impressive campaign playing for the Brisbane Blaze during the 2023 Hockey One season.