Napoli 2-1 Lazio
Napoli kept their title charge going with a 2-1 triumph over Lazio at the Stadio San Paolo on Sunday night.
Jose Callejon and Arkadiusz Milik put the home side two goals up in the first half.
Ciro Immobile pulled a goal for Lazio in the 65th minute, before the visitors had a man sent off when Francesco Acerbi received his marching orders five minutes later.
AS Roma 3-2 Torino
AS Roma picked up their first league win in 2019 after seeing off Torino at the Stadio Oimpico on Saturday night.
Goals from Nicolò Zaniolo, Aleksander Kolarov and Stephan El Shaarawy secured the win for the home side after Tomas Rincon and Cristian Ansaldi had given Torino hope in the second half.
Inter Milan 0-0 Sassuolo Inter Milan were left frustrated in their first league game of the year after being held to a goalless draw Sassuolo.