Juventus needed an unfortunate own goal from Edoardo Goldaniga to squeeze past Palermo while Napoli beat Chievo.
Mauro Icardi inspired a superb comeback win for Inter as they beat Juventus 2-1 on Sunday, while Roma lost at Fiorentina.
Francesco Totti made his 600th Serie A appearance as Roma moved up to second spot with a 3-0 win over Chievo.
Paulo Dybala scored twice as Juventus thrashed Lazio 3-0 to take what could prove to be a decisive lead in Serie A.
Juventus moved a step closer to a fifth straight Serie A title after pulling nine points clear with a 4-0 win over Palermo.
Paul Pogba sustained Juventus' march towards a fifth straight Serie A title by completing a 2-1 comeback victory over AC Milan.
Goalkeeper Gianluigi Buffon added another record to his decorated career during Juventus' 4-1 win over local rivals Torino.
Napoli kept pace with fellow title-chasers Juventus after coming from behind to beat Chievo Verona 3-1 at the Stadio San Paolo.
Juventus moved above Napoli at the top of Serie A after Simone Zaza's late goal secured a 1-0 win over the Azzurri.
Gonzalo Higuain scored a late penalty to give Napoli a 1-0 victory over Carpi on Sunday and keep them top of Serie A.
Crystal Palace are bottom of the Europe-wide form table - and only one Premier League team makes the top 10.
Carlos Bacca and M'Baye Niang hit second-half goals as AC Milan beat Inter Milan 3-0 on Sunday.
Swansea have confirmed the signing of striker Alberto Paloschi from Chievo on a three-and-a-half-year contract.
Domenico Berardi converted a penalty in injury time on Sunday to give Sassuolo a shock 1-0 win away at Inter Milan.
Substitute Simone Pepe had the last laugh in a six-goal Serie A thriller that saw Chievo hold Roma to a 3-3 draw.
Juventus beat Fiorentina on Sunday to rejoin the Serie A title race, while Napoli were held to a goalless draw at home to Roma.
Napoli's 18-match unbeaten run is ended by Bologna while Palermo are humbled away to Atalanta.
Inter Milan returned to the top of Serie A with a comfortable 4-0 home win over Frosinone on Sunday evening.
Riccardo Saponara scored the only goal of the game as Empoli recorded a 1-0 win in Palermo on Monday night.
Gonzalo Higuain's goal saw Napoli beat Serie A leaders Fiorentina 2-1, while Lazio were beaten 2-1 by Sassuolo.