(REUTERS) - Lorenzo Insigne's early goal set Napoli on their way to a comfortable 3-1 Champions League victory over Feyenoord in their Group F match on Tuesday as the Dutch club suffered another one-sided defeat in the competition.
Dries Mertens and Jose Callejon added goals in the second half as Napoli registered their first points of the campaign after losing to Shakhtar Donetsk in their opening group match.
Feyenoord had a chance to reduce the score to 2-1, and potentially set up an exciting finish, when they were awarded a 68th-minute penalty, but Jens Toornstra's effort was saved by Pepe Reina.
Sofyan Amrabat scored a consolation just seconds from the end.
Insigne scored after just seven minutes, stealing possession near the centre circle and rapidly sprinting straight up field before firing home past the outstretched arm of diving goalkeeper Brad Jones.
Napoli captain Marek Hamsik went narrowly wide as the hosts looked to increase their lead before half-time, but it took just four minutes after the break for Mertens to tuck away a gift back pass from Feyenoord defender Kevin Diks for a 2-0 lead.
But the Dutch champions might have made a contest of it after being awarded a penalty when Steven Berghuis was brought down in a double challenge from Napoli's Faouzi Ghoulam and Kalidou Koulibaly in the 67th minute.
But 35-year-old Reina made a good save to deny Feyenoord, who had also squandered a penalty at the weekend in the Dutch league.
Two minutes later, the contest was effectively over after another defensive error, this time from Renato Tapia, allowed Callejon to score from a tight angle.
Reina made a point-blank save to deny a shot from Berghuis that deflected off his own team-mate Tonny Vilhena as Feyenoord's fortunes continued to flounder.
But Amrabat burst through the defence to score three minutes into stoppage time.
It was Feyenoord's first goal in this season's competition.
Feyenoord had marked their return to Champions League after a 15-year absence with a 4-0 home loss to Manchester City in their opening group game.