Guelph rallied from a three goal deficit to beat Kitchener 4-3 in overtime.
Alexey Toropchenko scored the equalizer with less than two minutes left in regulation. Isaac Rattcliffe scored the game winner just 56 seconds into the extra frame.
Ryan Merkley got the Storm's rally started at 13:54 of the second and also set up Ratcliffe's game winner. Mason Primeau scored midway through the third for Guelph.
Riley Damiani led the Rangers with a pair of goals -- in the final minute of the opening period and four minutes into the second period.
Logan Brown also scored for Kitchener.
Anthony Popovich made 37 saves in the win. Luke Richardson stopped 22 shots for the Rangers.