Over his four seasons with Kitchener, Mascherin amassed 296 points (122-174=296) over 259 regular-season games. In 2016-17, he finished third in the OHL with 100 points (35-65=100) in 65 games played. He has also appeared in the OHL Playoffs in all four campaigns with the Rangers and amassed 42 points (17-25=42) in 39 postseason contests.
The 5-foot-10, 206-pound native of Maple, Ontario was selected by Dallas in the fourth round (100th overall) of the 2018 NHL Draft.