[1] His mother was born in Manila, Philippines, and moved to North America as a child where she would meet her Michigan-born husband.
[3] Before the move, his parents owned season tickets to the Los Angeles Kings and he would often go to games with his brothers Jason and Michael.
[7] As a result of his successful season, Robertson received the CHL Sportsman of the Year Award[8] and was named to the 2019–20 OHL All-Star Team.
In doing so, he became the third player in franchise history to record a playoff goal before their 19th birthday, the other two being Jack Hamilton in 1943 and Ted Kennedy (1944).
Robertson made 15 appearances with the Maple Leafs, registering two goals and five points before suffering a season-ending shoulder injury against the Los Angeles Kings on December 8, 2022, which required surgery.
[21] He made the Maple Leafs out of training camp, playing on third line with Max Pacioretty and Pontus Holmberg.