Pedzisa mutsara unotevera: Mushure memwaka wake wekutanga, Mascherin akasangana nemushandirapamwe wekuputsa sophomore nemapoinzi mumutambo wega wega wekutanga gumi nerimwe. Akakuvadzwa mumutambo wake wegumi nembiri wemwaka asi akadzokera kumutsara mushure memitambo mishoma uye akaramba achinyora mapoinzi. Pakazosvika December, Mascherin akanga ari wechipiri muchikwata chekuisa zvibodzwa ne 14 zvinangwa uye 20 zvinobatsira uye akapedza mwaka pamwe nehuwandu hwe 81 pfungwa mumitambo 61. Somugumisiro wokutamba kwake, akaiswa panzvimbo yechi 42 pakati pevatambi vose vokuNorth America vakakodzera nokuda kwe
2016 NHL Entry Draft neNHL Central Scouting Bureau. Gare gare kwakakurukurwa pakati pevasori kuti Mascherin akangoiswa munzvimbo yakaderera zvakadaro nekuda kwekureba kwake. Akapedza mwaka uyu aine mibairo yakawanda yechikwata kusanganisira Les Bradley Memorial Award semutambi anonyanya kuvandudzwa uye Jim Reilly Trophy semutungamiri wechikwata.