In defense of Rufus Wainwright, a Canadian-American who sang the National Anthem at Dodger Stadium prior to Game 5 of the World Series, mistakes happen.
It's understandable that Wainwright may have made errors, given the pressure of singing in front of 40,000+ fans.
As
Wainwright surely knows the words or else he wouldn't have volunteered to sing the song in the first place, a correct performance of the Canadian anthem is expected on baseball's grandest stage.
Author's summary: Rufus Wainwright tries to sing O Canada.