Napoli extended their lead at the top of Serie A to seven points as goals from Romelu Lukaku and Khvicha Kvaratskhelia sealed a 2-0 win in Milan.

Lukaku and Kvaratskhelia each scored in the first half as Napoli extended their unbeaten run in the league to nine games after their opening defeat in Verona.

Milan, back in action after a 3-1 home win against Club Brugge last week, fell behind in the fifth minute when Lukaku raced to a through ball from Frank Anguissa and fired the ball into the goal.

Napoli came under pressure when Yunus Musah and Samuel Chukwueze went close for Milan and Ruben Loftus-Cheek had a header well saved by visiting goalkeeper Alex Meret.

Scott McTominay scored a brilliant second goal for Napoli with a shot from outside the area that was saved by Milan goalkeeper Mike Maignan. But the guests extended their lead before the break. Mathías Olivera met Kvaratskhelia on the edge of the box and the Georgian winger fired his finish into the top corner.

Milan thought they had scored shortly after the restart, but Álvaro Morata's attempt was ruled out for offside after a VAR intervention.

Rafael Leão threatened for the home team in the closing stages when Meret acrobatically blocked his superb long-range shot, but Milan slipped to their third league defeat of the season.