Milan 1-2 Fiorentina

AC Milan were jeered off the San Siro pitch after suffering their fifth defeat of the Serie A season at the hands of visitors Fiorentina.

Fiorentina moved into fourth, before Sunday's matches, thanks to Juan Vargas's heavily deflected free kick and Borja Valero's cool finish.

Massimiliano Allegri's side are 11th with 12 points from their 11 games.

Meanwhile, Rafael Benitez's Napoli won 2-1 at home against Catania to move within two points of leaders Roma.

Spanish forward Jose Callejon put Benitez's side ahead with a stunning left-foot curler and their lead was doubled by Slovakia midfielder Marek Hamsik's first-time shot.

Defending champions Juventus are level with Napoli - both having won nine of their 11 matches - after Paul Pogba netted the decisive goal in a 1-0 win at Parma.

Roma, who became the first Serie A team to win their opening 10 matches on Thursday, can reopen a five-point gap when they travel to Torino on Sunday.