Defenceman Alex Roach of Schongan, Germany, scored the game winning goal from Pavlo Padakin and Calder Brooks.
The Hitmen now lead the Eastern Conference quarterfinal series 1-0 with game two of the series scheduled for tonight.
It was a strong night for Hitmen right winger Brady Brassart of Vernon, British Columbia. Brassart, who is being considered in the 2013 National Hockey League Draft, recorded a hat trick for the Hitmen, with all three of his goals coming even strength.
Greg Chase and Jaynen Rissling also had multi-point games for the Hitmen with two assists each.
In other WHL playoff action, the Medicine Hat Tigers defeated the Saskatoon Blades 4-1 to take a 1-0 series lead. All of the other six series will open this evening.