The Rimouski Oceanic beat the Moncton Wildcats at their own game.
Emmanuel Boudreau's late first-period goal was all the Oceanic needed as they blanked the best defensive team in Quebec Major Junior Hockey League history 1-0 on Friday night to win their quarter-final series in five games.
The Wildcats posted a record-low 149 goals against during the regular season en route to winning the Atlantic Division and finishing second overall. Although Rimouski finished in seventh place, the Oceanic were the hottest team in the league down the stretch, winning 20 of their final 21 games.
Elsewhere in the QMJHL, it was: Shawinigan 5, Gatineau 2; and Cape Breton 3, Quebec 2.
At Moncton, Maxim Gougeon made 24 saves to earn his first playoff shutout for Rimouski, which will face the top-ranked Drummondville Voltigeurs in the semifinals. Drummondville was the only team to beat the Oceanic during their season-ending run.
Nicola Riopel stopped 38 shots for the Wildcats, who missed the playoffs in a rebuilding year last season.
Cataractes 5, Olympiques 2
At Gatineau, Que., Cedric Lalonde-McNicoll had a goal and two assists to help Shawinigan dispose of the Olympiques in five games.
Lalonde-McNicoll leads the Cataractes in playoff scoring with 16 points (seven goals, nine assists) in nine games.
Charles-Olivier Roussel also had a goal and two assists, while Pierre-Alexandre Vandall - with a goal and an assist - Philippe Paradis and Maxime Macenauer also scored for Shawinigan.
Christian Ouellet-Martel and Tye McGinn replied for Gatineau.
Screaming Eagles 3, Remparts 2
At Sydney, N.S., Nicolas Chouinard scored the eventual winner on a power play three minutes into the third period as the Screaming Eagles took a 3-2 series advantage on Quebec.
Francis Meilleur and Joey Haddad also scored for Cape Breton.
Mikhail Stefanovich and Frederick Roy found the net for the Remparts.