The Windsor Spitfires beat the Spirit 4-2 on the road in Saginaw on Saturday night.
Andrew Robinson opened the scoring early, before Liam Greentree and John McLaughlin struck back-to-back in the second.
Jack Nesbitt padded the lead with a penalty-shot insurance goal in the third.
The Spirit head to Windsor to continue the home-and-home series Monday afternoon in a Family Day match-up.
Puck-drop is set for 2:05 p.m., with the pre-game show with Steve Bell underway at 1:50 p.m. on AM800.