Chelsea boss Thomas Tuchel is delighted with the way they have started the new season.
The Blues have two wins from two games in the Premier League, after defeating Arsenal 2-0 away from home on Sunday.
Chelsea also picked up the UEFA Super Cup, defeating Spanish side Villarreal on penalties.
Asked about their start to the season, Tuchel told the club's website: "It's a perfect start. We didn't concede a goal and we have two victories.
"It's a London derby so it gives us a lot of genuine confidence that we need as a team.
"We're a different group, some players left, some players came in, so these experiences together are what we need."