The Detroit Red Wings drafted Larsson with the 167th pick in 2016, and he will start next season with the Grand Rapids Griffins. He spent this 2018-2019 season playing college hockey with the University of Denver Pioneers posting a 13-6-3 record with an1.95 goals-against average (GAA) and a 0.932 Save Percentage (SV%). The 1.95 GAA was 11th best in the NCAA and 3rd among NCAA freshman.
The .932 SV% was 6th in the NCAA and 2nd among NCAA freshman. During the Pioneers postseason, Larsson started 6 out of 7 games while posting a 4-2 record with a 1.