2020 SeasonAll times ET
Juventus will have to wait to confirm a ninth-straight Serie A title after they suffered a shock 2-1 defeat against Udinese on Thursday.
Napoli forward Matteo Politano scored deep into stoppage time to give them a 2-1 win at home to Udinese on Sunday.
Lazio's unhappy run continued with a lacklustre 0-0 draw at Udinese, although they at least avoided a fourth successive Serie A defeat.
Fabio Quagliarella scored on his return from injury and Federico Bonazzoli scored with an overhead kick to help Sampdoria beat Udinese.
Udinese took a big step towards avoiding relegation from Serie A with a win over Roma.
Substitute Luis Muriel rifled in two long-range goals as irrepressible Atalanta beat Udinese 3-2 away on Sunday for their third straight win.