The Owen Sound Attack rallied for four goals in the third period to beat Peterborough 6-5.
Aidan Dudas had a hat trick and two assists in the victory.
Dudas got the late rally started 42 seconds into the third. Ethan Szypula scored his second of the game just under seven minutes later. Dudas scored again five seconds after Szypula and Alan Lyszczarczyk's goal at 12:23 would stand as the game winner.
The Petes were led by Logan DeNoble with two goals and an assist.
Olivier Lafreniere made 34 saves for Owen Sound. Dylan Wells stopped the same number for Peterborough.