Johnston did not play in the OHL during the 2020-21 season because of the League's cancellation due to the COVID-19 pandemic.
The forward has represented Team Canada on the International stage on two occasions. He posted four points (2-2=4) in seven games at the 2021 IIHF U18 World Championship, which was held at Comerica Center and Children's Health StarCenter Plano. At the 2019 World Under-17 Hockey Challenge, he posted five points (2-3=5) and 14 penalty minutes in five games.
The 6-foot-1, 175-pound native of Toronto, Ontario was originally selected by Dallas in the first round (23rd overall) of the 2021 NHL Draft.
Stankoven, 18, skated in six games and recorded 10 points (7-3=10) during the 2020-21 campaign with the Kamloops Blazers of the Western Hockey League (WHL). He registered eight points (4-4=8) in seven games at the 2021 IIHF U18 World Championship, helping Team Canada capture the gold medal. Among all tournament players, Stankoven ranked first with a +14 rating.