Napoli reclaimed top spot in Serie A as in-form striker Victor Osimhen struck twice in an impressive 4-0 win at Sampdoria on Thursday, its fifth consecutive league victory.

Luciano Spalletti’s side is two points clear of Inter Milan and AC Milan with a perfect 15 points, scoring 14 goals and conceding two in its five games.

"For me it is important to start well, this gives me the confidence to score more goals," Osimhen told DAZN.

"Spalletti has helped me with the faith he has given me, and I hope to repay that. I am honoured to have a coach like him."

Osimhen's cushioned volley put the visitors ahead after 10 minutes at the Stadio Luigi Ferraris before two good saves from David Ospina denied Sampdoria an equaliser.

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Napoli pulled clear through an arrowed Fabian Ruiz strike before the break, and explosive strikes from Osimhen and Piotr Zielinski completed the rout.

Osimhen, who had enough opportunities to score a hat-trick, took his tally to five goals in five games in all competitions as the Partenopei continued to make an early statement about their title credentials.

Elsewhere, Ciro Immobile scored a stoppage-time penalty to rescue a 1-1 draw for Lazio at Torino, but the Roman club put in another underwhelming performance under new coach Maurizio Sarri.

Marko Pjaca headed the host in front after 76 minutes moments after stepping off the bench, and the Croatian was denied a second by a smart Pepe Reina save.

Vedat Muriqi was tripped in the box late on to allow Immobile to convert a penalty, minutes after the Italy striker hit the bar with a header.

Lazio is seventh in the standings with eight points, with Torino one point behind in 10th and Sampdoria 13th on five points.