MacIntyre has won his last two starts for Manitoba (12-12-3-2), allowing just one goal in that span, and stopping 62 of 63 shots for a .984 save percentage.
Jason Jaffray, J.J. Hunter and Nathan Smith tallied goals, while Brad Moran added two assists for Manitoba, who swept the weekend series against the Rivermen (13-8-1-2).
Chris Beckford-Tseu stopped nine of 11 shots for the Rivermen.