Victor Osimhen continued his blistering goalscoring form as Napoli moved 18 points clear at the top of Serie A with a routine victory against Empoli.
An own goal by Empoli defender Ardian Ismajli broke the deadlock before Victor Osimhen made it 2-0 with his 19th league strike of the season.
The Nigeria forward had another goal chalked off for offside by the semi-automated offside technology.
Portugal left-back Mario Rui was sent off in the second half for violent conduct after he kicked at Empoli’s Francesco Caputo, but Luciano Spalletti’s side held on comfortably.
Inter could reduce the gap to 15 points again when they play away at Bologna on Sunday.
Osimhen has now scored in his last eight Serie A games, becoming the first player to do so since Cristiano Ronaldo – who netted in 11 consecutive matches for Juventus.