Napoli star Marek Hamsik says there's more goals in him after a change of position.

The 23-year-old Slovakia international opened the scoring in a 2-0 win over AS Roma.

"On a personal level, things are now going better," Hamsik said. "Mazzarri has found the right position to get the best out of me and I have even started to score some goals.

"I would have been able to score another one, but Lobont overcame a couple of chances, above all in the first half.

"In all, it was quite a balanced game until I scored. Then, little by little Roma disappeared."