Adam Klapka scored his first two career World Championships goals - part of a three-point day - as Czechia moved to the top of Group B.
Klapka's performance was just part of a busy Saturday overseas, as Flames captain Mikael Backlund also found the scoresheet in Sweden's win over France, while MacKenzie Weegar, Ryan Huska and Team Canada took care of business against Sam Honzek's Slovakia side.