Arsenal claimed a valuable 2-1 win over Chelsea and continued their perfect Premier League record this season thanks to Martin Ødegaard's second-half strike.
Mikel Arteta's side were made to work for it and had to come from behind through Kai Havertz's equaliser after Morgan Rogers had opened the scoring for the visitors after just 77 seconds.
After defeating Manchester City in impressive fashion in the Community Shield, Arsenal got off to the perfect start in the opening game of this Premier League season when they swatted aside Coventry City.
It was a set of familiar faces who got on the scoresheet that day, with Havertz, Bukayo Saka and Ødegaard providing the goals.
Saka proved the hero a week later as the Gunners eventually overcame a stubborn Aston Villa defence to take an impressive three points away from Villa Park, even if Unai Emery's much-changed side have made a slow start to the season.
Chelsea came into Sunday's game having already scored six Premier League goals this season. They began their campaign with a trip to another of the capital's teams, beating west London rivals Fulham 3-2 thanks to goals from João Pedro, Morgan Rogers and the revitalised Cole Palmer.
Their second game was even more free-scoring, as Romeo Lavia, Pedro Neto and Pedro again gave Xabi Alonso's side a 3-0 lead against Brighton, only for the game to finish 4-3, with Palmer again getting the decisive goal.
Sunday's game proved that, despite the defeat, Chelsea are a force to be reckoned with this season.
