Luke Prokop scored, plus assisted the Association’s 7:17 game winner.
Dylan Guenther, Carter Souch and Justin Sourdif also scored for the Oil Kings, who overcame Red Deer 52-22.
Liam Keeler, Kalan Lind, Arshdeep Bains and Jhett Larson had singles for the Rebels, who scored twice in a row in the third inning to close the game.
Sebastian Cossa made 18 saves for Edmonton, while Connor Ungar saved 47 shots.
Game 4 is Wednesday at Red Deer.
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