Sampdoria came from behind to record a 3-1 victory over Atalanta at the Stadio Luigi Ferraris on Sunday.
Udinese ended Sampdoria's unbeaten Serie A start with a 4-0 victory at Friuli, where midfielder Edgar Barreto was sent off.
Former QPR midfielder Adel Taarabt received a straight red card as nine-man Genoa lost 1-0 to Inter Milan.
Inter Milan's perfect start to the new Serie A season ended on Tuesday as they were held to a 1-1 draw at Bologna.
Inter Milan scored two late goals to maintain their 100 per cent start to the Serie A campaign with a 2-0 triumph at Crotone.
Paulo Dybala's hat-trick helped Juventus overcome an early collapse as the Serie A champions fought back to beat Genoa.
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