A spectacular volley from Danilo in the third minute of added time earned Udinese a last-gasp 1-0 win at home to Bologna
Udinese have demanded an apology from captain Danilo Larangeira after he hurt three of his team-mates in training.
Juventus saw off Pescara 3-0 on Saturday to take a seven-point lead at the top, while Napoli and Chievo also claimed wins.
Juventus maintained their four-point lead at the top of the Serie A table after Miralem Pjanic struck a late winner at Chievo.
Frank de Boer's future as Inter Milan head coach is under serious threat after a 2-1 defeat to Atalanta in Bergamo on Sunday.
Two goals from Paulo Dybala helped Juventus strengthen their lead at the top of Serie A with a 2-1 win over Udinese on Saturday.