Inter dealt a blow to Juventus' Serie A title defence and moved level on points with leaders Milan by securing a 2-0 victory at San Siro on Sunday.
Former Juve midfielder Arturo Vidal opened his Inter account with a 12th-minute header and Lautaro Martinez and Romelu Lukaku wasted chances to increase the Nerazzurri's lead.
The Bianconeri were unable to make the most of those reprieves as an emphatic finish at the end of a route-one move saw Nicolo Barella double Inter's advantage.
It was enough to give Antonio Conte a first Serie A win against Juve – the club he led to three straight Scudetti at the start of their ongoing run of dominance – and move the hosts level with Milan, who play their game in hand against Cagliari on Monday.