The LaSalle Vipers have eliminated the Sarnia Legionnaires in Game 7, after a 5-2 victory on Sunday.
Liam MacDougall led LaSalle with a hat-trick, while Owen Lalonde and Connor Rosaasen scored the other two goals.
The Vipers will now take on the London Nationals in the next round of playoffs.
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And in Junior C hockey, the Essex 73's edged the Amherstburg Integrity Admirals 2-1 to tie the series 2-2.
Griffin McCarty and Tyler Scott each scored once for Essex. Caleb Paquette scored Amherstburg's only goal.
The two teams face off in Game 5 on Tuesday at 7pm.