Sergio Aguero scored a hat-trick in Manchester City's 6-1 rout of Huddersfield Town on Sunday before the champions' neighbors Manchester United suffered a limp 3-2 defeat at Brighton & Hove Albion that left Paul Pogba questioning his team's attitude.
While Pep Guardiola's City again dazzled against the only side to hold it without a goal at Etihad Stadium in the league last season, United produced a tepid, defensively inept display that offered little hope the club will be in the mix for the title this season.
Sunday's other game saw Watford beat Burnley 3-1 to leave the Hornets as one of five sides unbeaten with six points at the top of the table.