At Sydney, Philippe Trudeau earned the game's first star by stopping 41-of-45 shots for Cape Breton, but Nathan MacKinnon scored 1:17 into overtime to lift Halifax (1-0-0) to a 4-3 win over the Screaming Eagles (0-0-1).
Elsewhere, Josh Currie scored his second career hat trick, and added an assist to complete a four-point effort, as the P.E.I. Rocket defeated the visiting Moncton Wildcats 6-2.
Alex Micallef had a goal and two assists for the Rocket (1-0-0) while Victor Provencher and Ben Duffy added a goal apiece.
Alex Saulnier and Ross Johnston each scored for the Wildcats (0-1-0).
P.E.I. goaltender Maxime Legace made 31 saves for the victory while Alex Dubeau allowed six goals on 25 shots against for the loss.
P.E.I. went 2 for 5 on the power play while Moncton scored once on seven chances with the man advantage.
Elsewhere in the QMJHL, it was: Saint John 3, Acadie-Bathurst 2 (OT); Quebec 9, Chicoutimi 4; Rimouski 5, Sherbrooke 1; Val-d'Or 4, Victoriaville 3 (SO); Baie-Comeau 4, Gatineau 1; Blainville-Boisbriand 5, Rouyn-Noranda 3; and Drummondville 4, Shawinigan 3.
Sea Dogs 3 Titan 2 (OT)
At Bathurst, N.B., Jonathan Huberdeau and Kevin Gange each had a goal and an assist for Saint John, however it was Oliver Cooper's goal 3:32 into overtime that lifted the Sea Dogs (1-1-0) over the Titan (1-0-1).
Remparts 9 Sagueneens 4
At Quebec City, Anthony Duclair had three goals and an assist to lead the Remparts (1-0-0) over Chicoutmi (0-1-0) while eight other teammates also recorded multi-point games, including Mikhail Grigorenko who had a goal and three assists.
Oceanic 5 Phoenix 1
At Sherbrooke, Que., Peter Trainor scored twice and Carl Hozjan turned away 28 shots as Rimouski (1-0-0) downed the Phoenix (0-1-0).
Foreurs 4 Tigres 3 (SO)
At Val-d'Or, Que., Brett Hester scored the winning goal in the shootout while teammates Michael Beaudry and Anthony Mantha added a goal and two assists apiece as the Foreurs (1-0-0) edged the Victoriaville (0-0-1).
Drakkar 4 Olympiques 1
At Baie-Comeau, Que., Valentin Zykov had a goal and two assists and Philippe Cadorette stopped 23 shots as the Drakkar (1-0-0) defeated Gatineau (0-1-0).
Armada 5 Huskies 3
At Rouyn-Noranda, Que., Christopher Clapperton scored twice as Blainville-Boisbriand (1-0-0) came back from a two-goal deficit to beat the Huskies (0-1-0.)
Voltiguers 4 Cataractes 3
At Shawingan, Que., Jeremie Malouin scored twice and Domenic Graham made 18 saves as Drummondville (1-0-0) slipped past the Cataractes (0-1-0).