French striker Cyril Thereau scored in either half to get Fiorentina back to winning ways with a 2-1 success over his former club Udinese in Tuscany on Sunday.

Thereau -- who arrived in Florence in August after three seasons with Udinese -- scored after 28 minutes and 57 minutes in Sunday's early Serie A game.

The hosts dominated early with Thereau turning in a Giovanni Simeone cross for the first, and picking up a rebound from fellow Frenchman Jordan Veretout for the second which brought his tally to five Serie A goals this season.

Brazilian defender Samir pulled one back on 72 minutes as Udinese fought back in the second half.

"It was important that we have this kind of reacion," said coach Stefano Pioli after recent defeats.

"But in terms of game management we can still grow a lot. We're still at the beginning of our journey."

It was a third win of the season for Fiorentina who have suffered four defeats in eight games and move to 11th two places ahead of Udinese.

Napoli pulled clear at the top of Serie A on Saturday by beating Roma 1-0 with Ciro Immobile's second-half brace for Lazio condemning champions Juventus to a first home defeat, 2-1, in over two years.

Napoli go five points clear of the six-time reigning champions who are now equal on 19 points with Lazio and Inter Milan, who go head to head with city rivals AC Milan on Sunday night.