San Jose's Macklin Celebrini opened the scoring in the first period and the game was never in doubt.
The Czechs had nothing to offer the Canadians, who were ultimately able to win by five goals.
Superstar Connor McDavid (Edmonton), considered by many to be the best ice hockey player in the world, had three assists. Veteran and superstar Sidney Crosby (Pittsburgh) had two assists.
Later in the evening, the United States also began play in the tournament; the Americans were the second-place favorites to win gold. The team beat Latvia in a clear 5-1 victory, including two goals by Brock Nelson.
Sweden defeated the host nation Italy 5-2 in the opening match.
