Napoli's perfect start to their Europa League campaign continued as Marek Hamsik inspired them to victory over former club Slovan Bratislava at the Stadion Pasienky on Thursday.
Hamsik put the Italians on their way with a perfect header in the 35th minute and then set up a second for substitute Gonzalo Higuain to make it 2-0 with 16 minutes remaining.
The outcome in Slovakia ended Slovan's five-game unbeaten home run in European competition and lifted Napoli top of Group I, three points clear of Sparta Prague and Young Boys.
Sparta won 3-1 over Young Boys in the other group game.
The hosts, looking for their first win after being humbled 5-0 at Young Boys in their opening group fixture, were under pressure early on with Jonathan de Guzman's 12-yard shot forcing Slovan goalkeeper Dusan Pernis to make a save.
Hamsik came closest on the half-hour mark when he drilled a left-footed shot from 14 yards that forced Pernis to dive to his right to clear.