Robertson also was able to produce with little support around him, especially after Kingston traded forward Warren Foegele (Carolina Hurricanes) to Erie on Jan. 2. At the time Foegele had 31 points in 28 games with Kingston.
"I expected to be a leader offensively for this team from the start of the season," Robertson said. "I knew those expectations were on me. When we traded [Foegele] to Erie, it opened a door for me to fill that role. I knew it wouldn't be easy losing one of our top offensive players, but the system our coaches put in place allowed me to be the offensive player I am."
In 33 games after Foegele was traded, Robertson had 47 points (26 goals, 21 assists), and then he led Kingston in scoring in the postseason with 18 points (five goals, 13 assists) in 11 games.
Robertson was born in the Los Angeles suburb of Arcadia, California, but the family moved to Northville, Michigan, when Jason was 10, which made playing in the OHL a possibility.
"I wanted to play in the OHL," he said. "I moved to Toronto with my mom three years ago so I could be drafted by the OHL. There are a lot of players who have made the jump straight to the NHL from the OHL and I wanted to do the same thing."
His younger brother, Nick, has chosen the same path and was selected by Peterborough with the 16th pick of the 2017 OHL draft. Kingston and Peterborough are in the same division, which means the brothers could play against each other eight times next season.
"Our passion for hockey comes in large part from how competitive we are with each other," Robertson said. "I'm better than him, but he doesn't agree. We push each other all the time and that's a big reason why I had such a successful season."