Saarinen was a third-round pick (No.88 overall) in this year's NHL Draft. The 6-foot-4 netminder spent most of the 2024 season with HPK in the Finnish U20 league, were he was 14-5-0 with a. 2.41 GAA, .917 SV% and two shutouts. In two games in the top Finnish league (Liiga), he was 1-0-1 with a 2.46 GAA and .909 SV%.