Jonathan David scored three goals and Canada won its first World Cup match while all but securing a spot in the knockout round with a 6-0 victory over Qatar on Thursday.Qatar was reduced to nine players because of red cards in the chaotic match. Homan Ahmed was sent off in the first half for a challenge on Tajon Buchanan and Assim Madibo was handed a red early in the second half after a tackle on Ismaël Koné, who was stretched off with a serious injury to his lower left leg.Canada Prime Minister Mark Carney attended the match after missing the team’s opener in Toronto last week because of the G7 summit in France. He sat with FIFA President Gianni Infantino. ___AP World Cup: https://apnews.com/hub/fifa-world-cup___