Hamblin played four seasons for the Medicine Hat Tigers of the Western Hockey League (WHL), serving as the team's captain from 2017 through 2020.
On April 30, 2020, Hamblin signed a two-year contract with the Bakersfield Condors of the American Hockey League (AHL).
On March 2, 2022, Hamblin signed a one-year contract with the Condors' National Hockey League (NHL) affiliate, the Edmonton Oilers.
[4] On November 18, 2023, Hamblin recorded his first career goal, scoring against Jonas Johansson in a 6–4 loss against the Tampa Bay Lightning.
In his reaction to the goal, Hamblin pointed upwards and stated "that's for you, mom," dedicating the milestone to his late mother Gina, who passed away from cancer in September 2017.