Sampdoria 1-3 Inter Milan
Alexis Sanchez netted his first goal for Inter Milan and was later sent off in the win over Sampdoria on Saturday evening.
Stefano Sensi and Sanchez put the home side two goals up in the first half, before the on-loan Manchester United forward was sent off on the stroke of halftime for a second bookable offence.
Jakub Jankto pulled a goal back for Sampdoria in the 55th minute, while Roberto Gagliardini sealed the win on the hour mark.
The win sees Inter maintain their perfect record in Serie A, while Sampdoria remain bottom of the log.
Sassuolo 1-4 Atalanta
Atalanta secured a second successive Serie A victory after thrashing Sasuolo on Saturday night.
Alejandro Gomez bagged a brace while Robin Gosens and Daniel Zapata rounded off the scoring.
Gregorie Defrel netted the consolation for Sassuolo who sit in 14th spot while Atalanta moved up to third.