With the win, unbeaten Canada moved to six points atop Group E. Latvia stayed in next to last place with one point.
Jason Williams paced Canada with one goal and three assists. Kyle Calder scored two goals, while Sidney Crosby, Brad Boyes, Patrice Bergeron, Brendan Shanahan, Jeff Carter, Matt Pettinger, Mike Richards and Scott Hartnell had a goal each.
Looker called 16 penalties against Latvia, twice as many as he called on Canada.
"You can't prepare for a game like that," Latvian forward Herberts Vasiljevs said. "The referee was giving penalties for clearly nothing.
``Honestly, there were a couple of penalties that he really could give, but a couple of those penalties were just ridiculous."
In the earlier game, Alexander Ovechkin twice set up Sushinky to give Russia a 2-0 lead, the first with 3:54 remaining in the first period.
"I believe today's win puts us already in the quarterfinals, and it was a tough game," Sushinsky said.
After setting up Sushinky 73 seconds into the third, Ovechkin also scored his fourth of the tournament when he tipped in defenseman Andrei Kruchinin's shot from the point for a 3-0 lead at 6:06.
"Coach told us to go out there and score goals, and in the second and third period we played well," Ovechkin said. "We haven't played so long together and right now we play all the time together, and we feel more comfortable on the power play and when we play five-on-five.
"Today, I got a lot of ice time and I had lots of scoring chances, and my linemates had lots of chances. You feel more comfortable when you play a lot."
The win gave Russia six points atop the Group F standings. One win from first-round play doesn't count in the standings. Ukraine is sixth and last with zero points.
Russia has not won the world championship since 1993.
Russia added two more power-play goals by Denis Kulyash and Igor Grigorenko in the third period. Sergey Mozyakin scored the other goal.
RSS