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Manchester City's 18-year-old summer signing Ayyoub Bouaddi impressed on his first Champions League start, prompting suggestions the club have unearthed a gem, while Aston Villa ended their goal-shy form with a three-goal win away at Club Brugge. The matchday also saw holders Paris Saint-Germain launch their title defense in style, thrashing Slovan Bratislava 6-1 at home, with Ballon d'Or winner Ousmane Dembele scoring twice for his first goals of the season. Elsewhere on the night, Liverpool's Alexis Mac Allister answered questions about his contract situation with a strong performance in a win over Atletico Madrid, and Arsenal continued their unbeaten start to the campaign behind another goal from captain Martin Odegaard, who pundits say looks back to his best form. The results left several of Europe's traditional heavyweights with strong early showings in the competition.