Tardi and his team of Middleton, Jordan Tardi, and Meister won a second provincial junior title in 2017. Representing British Columbia at the 2017 Canadian Junior Curling Championships, the team lost one round robin game en route to winning the national championship, defeating Ontario's Matthew Hall rink in the final. The team represented Canada at the 2017 World Junior Curling Championships, where they finished the round robin with a 6–3 record, but lost to Norway in a tiebreaker game. That year, Tardi also skipped British Columbia at the 2017 Canadian U18 Curling Championships, losing just one round robin game. However, he was not successful in the playoffs, losing in the semifinal.