Reuben Young scored the game winner with less than two minutes to go in regulation and the Brantford 99ers topped the Stratford Warriors 6-5.
The Warriors still lead their Midwestern Conference Quarterfinal 2-1.
The 99ers capitalized on their four power play opportunities, scoring three times with man advantage.
Evan Ilkos led Brantford with a pair of goals and an assist. Ryan Mulholland and Shaun General each scored and had two assists in the win.
The Warriors were led by Nathan Smilsky with a goal and an assist.
Kevin Donaghey earned the victory with 20 saves for Brantford. Zack Weir stopped 28 shots in defeat.