Erling Haaland scored twice on his Premier League debut as Manchester City opened their defence of the title with a 2-0 win at West Ham, while Manchester United were beaten 2-1 by Brighton in Erik ten Hag's first game in charge on Sunday.
Haaland lived up to the hype since his transfer from Borussia Dortmund to give the champions a perfect start to the season in the searing heat of East London.
West Ham nearly derailed City's title chances when they led 2-0 at half-time in the penultimate game of last season before Pep Guardiola's men battled back for the point that ultimately edged out Liverpool at the top of the table.
But they were no match this time as Haaland immediately proved the value of City adding a proven goalscorer to their arsenal.