Zlatan Ibrahimovic marked his return to action after four months out with a goal as AC Milan registered a 2-0 win over Lazio after champions Inter Milan drew 2-2 at Sampdoria. 

Stefano Pioli’s side are level on a perfect nine points with second-placed Napoli, who beat Juventus on Saturday, thanks to Rafael Leao’s neat strike just before the break and a tap-in from forward Ibrahimovic seven minutes after making his comeback as a second-half substitute.