Francesco Totti made his 600th Serie A appearance as Roma moved up to second spot with a 3-0 win over Chievo.
Juventus are closing in on a fifth consecutive Serie A title after emerging victorious from a gritty game with Fiorentina.
Juventus moved a step closer to a fifth straight Serie A title after pulling nine points clear with a 4-0 win over Palermo.
Napoli are back within six points of Serie A leaders Juventus after beating bottom club Hellas Verona 3-0 on Sunday.
Juventus have moved a step closer to a record-equalling fifth successive Serie A title after their closest rivals Napoli lost at Udinese.
Goalkeeper Gianluigi Buffon added another record to his decorated career during Juventus' 4-1 win over local rivals Torino.
Gonzalo Higuain's penalty saw Napoli squeeze past Palermo 1-0 and maintain their pursuit of the Serie A title.
Juventus restored their three-point advantage at the top of Serie A with a 2-0 win at Atalanta on Sunday.
Roma routed Palermo without Francesco Totti on Sunday, while Fiorentina kept pace in the Serie A title race.
Fiorentina moved up to third in Serie A after beating Inter Milan 2-1 on Sunday in a game that featured three red cards.
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.
Ten-man Juventus needed an own goal from Genoa defender Sebastian De Maio to maintain their pursuit of Serie A leaders Napoli.
Stephan El Shaarawy scored on his Roma debut as the Giallorossi recorded a 3-1 victory over Serie A strugglers Frosinone.
AC Milan were held to a 2-2 draw by Empoli, while Frosinone and Atalanta played out a goalless draw on Saturday in Serie A.
Striker Alessandro Diamanti has cut short his loan spell at Watford and joined Atalanta from his parent club Guangzhou Evergrande.
Domenico Berardi converted a penalty in injury time on Sunday to give Sassuolo a shock 1-0 win away at Inter Milan.
Fiorentina maintained their pursuit of a first title in almost 50 years with a 3-1 win at Palermo.
Inter Milan top the Serie A table at Christmas despite suffering a 2-1 defeat to Lazio at the San Siro on Sunday
Gonzalo Higuain's brace helped Napoli to a 3-1 win over Atalanta and back up to third in Serie A.