Inter Milan suffered a surprise 2-0 defeat to Chievo on the opening weekend of Serie A while Napoli also struggled.
Leeds have signed Sweden international Pontus Jansson on a season-long loan from Italian side Torino.
Torino have completed the signings of Adem Ljajic and Iago Falque from Serie A rivals Roma.
Emanuele Giaccherini's agent has said a move to Chelsea to work under Antonio Conte would be a "dream".
Monaco have signed Poland centre-back Kamil Glik on a four-year deal from Torino, the clubs have confirmed.
Torino have confirmed the appointment of former AC Milan head coach Sinisa Mihajlovic on a two-year deal.
Simone Verdi ensured Carpi had to be dragged back into Serie B kicking and screaming as they secured a 2-1 victory at Udinese.
Udinese's Serie A status remains in doubt after a resounding 5-1 defeat at the hands of Torino at the Stadio Friuli.
Juventus are closing in on a fifth consecutive Serie A title after emerging victorious from a gritty game with Fiorentina.
Paulo Dybala scored twice as Juventus thrashed Lazio 3-0 to take what could prove to be a decisive lead in Serie A.
Inter Milan left Napoli's Serie A title hopes hanging by a thread on Saturday after a 2-0 home victory.
Napoli are back within six points of Serie A leaders Juventus after beating bottom club Hellas Verona 3-0 on Sunday.
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.
Francesco Totti made his 600th Serie A appearance as Roma moved up to second spot with a 3-0 win over Chievo.
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.