Erling Haaland delivered a moment of magic as Manchester City secured a comfortable win over Sparta Prague, extending their unbeaten run in this season's Champions League at the Etihad Stadium.Haaland, who had been thwarted twice by visiting goalkeeper Peter Vindahl, finally broke through midway through the second half with a stunning acrobatic backheel volley from Savinho's cross.Even the Norwegian forward seemed surprised by the audacious finish, which gave Pep Guardiola's side some breathing room after a series of missed chances.Phil Foden had put City ahead just three minutes in with a precise strike into the bottom corner, but despite creating numerous opportunities, they only held a narrow lead at halftime due to Vindahl's excellent goalkeeping, denying both Haaland and Foden a second.Haaland's brilliance sparked City into life after the break, and John Stones made it 3-0 with a powerful header, following up his winning goal from the weekend.Haaland then added his second of the night with a composed curled finish, bringing his Champions League tally to an incredible 44 goals at just 24 years old.Matheus Nunes completed the 5-0 rout with a late penalty, marking his first Champions League goal and sealing City's dominance.The win leaves Manchester City with two victories and a draw in their group, cementing their strong start to the competition.