Brydone was the alternate on the Bruce Mouat rink representing Scotland that won a gold medal at the 2016 World Junior Curling Championships.

[3] Brydone played in one game at the tournament, subbing in for Bobby Lammie in their game against Denmark after Lammie fell ill.[4] The following year, Brydone played third on the Cameron Bryce rink which won the 2017 Scottish Junior Curling Championships.

[1] The team represented Scotland at the 2017 World Junior Curling Championships, where after finished the round robin with a 6–3 record.

In the playoffs, they beat Switzerland in the semifinal, but lost to Canada's Tyler Tardi in the final, winning silver in the process.

He led his team to an 8–0 undefeated record in pool play, but lost to Canada in their first playoff game, and were eliminated in the process.

[14] Later in the season, the team played in the 2022 Scottish Curling Championships, losing in the finals[15] to Ross Paterson.