Inter went top of the Serie A table with a 2-0 win over Lazio, as Napoli were beaten by Bologna.
Lautaro Martinez and Ange-Yoan Bonny were on target for last year’s beaten Champions League finalists.
Victory put Inter on 24 points after 11 matches – level with Roma but with superior goal difference.
Napoli are two points back – with AC Milan also on 22 points – after Bologna won 2-0.
Thijs Dallinga and Jhon Lucumi scored to leave Antonio Conte’s side without a win in their past three matches in all competitions.
In Germany, Wolfsburg sacked coach Paul Simonis following the side’s 2-1 defeat at Werder Bremen in the Bundesliga on Friday.
Simonis, nicknamed ‘Gouda Guardiola’ for his faint resemblance to Manchester City coach Pep Guardiola, took over in June at Wolfsburg after leading Dutch side Go Ahead Eagles to their first ever Dutch KNVB Cup victory in April.
“The 40-year-old was released on Sunday evening,” Wolfsburg said in a statement. Under-19 coach Daniel Bauer will replace him until further notice, the club said.
