ST. PETERSBURG, Russia — Ryan O'Reilly scored twice as Canada remained unbeaten at the world hockey championship with an 8-0 rout of Belarus on Monday.

Canada broke a close game open with four second-period goals to improve to 3-0 in St. Petersburg, Russia.

Derick Brassard, Matt Duchene and Michael Matheson scored power-play goals for Canada, while Corey Perry, Taylor Hall and Mark Stone contributed at even strength.

Cam Talbot made 13 saves for the shutout.

Canada's next game is Thursday against Germany.