Idaho appeared to have control of the game, but the Ontario Reign rallied from behind two times to earn a 6-5 overtime win Wednesday night at CenturyLink Arena.
Idaho led 3-0 after first-period goals by Tommy Grant, Anthony Nigro and Justin Mercier.
But the Reign battled back in the second period with three goals of their own to knot the score at 3-3.
The see-saw scoring continued as Ryan Button and Mitch Wahl scored for Idaho to put the Steelheads up 5-3 in the third period.
Ontario silenced the crowd, however, by tying the game at 5-5 with 10 seconds remaining in regulation and then getting the game-winner from Zach OBrien 20 seconds into the extra period.
Chris Langrill: 377-6424