Cristiano Ronaldo made an immediate impact on his return from a Covid-19 infection on Sunday, scoring three minutes after coming on as a substitute before converting a penalty to lead Juventus to a 4-1 Serie A win at Spezia.

The Serie A champions, pegged back at 1-1 when the 35-year-old entered the fray, scored three times in 20 minutes after his arrival as they went second on the table.

Alvaro Morata and Adrien Rabiot were also on target as Andrea Pirlo’s side bounced back after drawing their previous three Serie A matches.

Morata gave Juve the lead in the 14th minute. The goal was initially flagged offside but then awarded following a VAR check.

In Udine, the irrepressible Zlatan Ibrahimovic scored an acrobatic late goal to give AC Milan a hard-fought 2-1 win against Udinese.

Ibrahimovic, with his back to goal, hooked the ball into the net with an overhead kick in the 83rd minute despite not making proper contact after Sebastien De Maio had sliced an attempted clearance high into the air from Ante Rebic’s cross.

The 39-year-old Swede, who also set up Milan's opening goal for Franck Kessie, has now scored in his last six Serie A outings.