Romelu Lukaku scored on his Napoli debut to help Antonio Conte's side come from behind to beat newly promoted Parma.
Lukaku completed his £38million move to Napoli from Chelsea on Thursday, having been placed in the Blues' 'bomb squad' available for sale.
The Belgian completed the permanent switch to Napoli having spent the last two seasons on loan in Serie A at Inter Milan and Roma.
Lukaku was reunited with former Inter Milan boss Conte at Napoli and the forward made an instant impact for the Italian coach on Saturday.