Napoli returned to the top of Serie A on Sunday after Nigerian international Victor Osimhen scored the only goal in a hard-fought 1-0 win against Torino.
AC Milan had moved to the top of the table after battling back from two goals down to beat Hellas Verona 3-2 at the San Siro on Saturday.
But Napoli moved back to the summit after Osimhen, who had scored for his country in a 2-0 win against the Central African Republic in World Cup qualifying last week, headed the 81st-minute winner.
Napoli have 24 points, two more than AC Milan while reigning champions Inter Milan are on 17 points after losing ground following a 3-1 defeat away to Lazio on Saturday.
Juventus host Roma in Sunday’s late match.
Atalanta were easy 4-1 winners against Empoli on Sunday as they warmed up to take on Manchester United at Old Trafford in the Champions League on Wednesday.