Raheem Sterling scored an 11-minute second-half hat-trick as Manchester City ruthlessly demolished Atalanta to maintain their 100% start in Champions League Group C.

This turned into another emphatic statement of City's attacking power but it was a far from perfect evening for Pep Guardiola with Rodri limping off with a hamstring injury and Phil Foden sent off for the first time in his career for two late bookings.