[2] On March 20, 2014, the Carolina Hurricanes of the National Hockey League (NHL) signed Robertson as a free agent to a two-year, entry-level contract,[3] and he was immediately assigned to play with the Charlotte Checkers of the AHL.
Robertson struggled to adapt with the Rockford IceHogs, posting 5 points in 37 games before on February 29, 2016, he was returned to the Hurricanes in a trade for goaltender Drew MacIntyre.
[5] At the conclusion of his contract with the Hurricanes after the 2017–18 season, Robertson was not tendered a qualifying offer to become a free agent.
Robertson opted to continue his tenure with the Checkers in returning for his sixth season with the club in securing a one-year AHL contract on July 12, 2018.
[6] After helping the Checkers capture the Calder Cup in his sixth season with the club in 2018–19, Robertson left North America as a free agent, agreeing to his first European contract on a one-year deal with the Italian outfit, HC Bolzano of the EBEL, on July 5, 2019.