It was an afternoon that started so well for Arsenal, but ended in heartbreak as the Gunners dropped points from a leading position for the second week running.
Arsenal took the lead early on through Gabriel Jesus, which was quickly added to by Martin Odegaard.
The visitors looked to be cruising, until a penalty scored by Said Benrahma and a goal from Jarrod Bowen levelled the play.
Bukayo Saka missed from the spot when the score was at 2-1, which ultimately summed up a poor second half for Arsenal.
Player ratings from the London Stadium:
Ramsdale: 6 - Impressive when called upon, beaten from the spot.
Tierney: 6.5 - Had a strong game in a difficult environment in the second half.
Holding: 5 - Looked nervous in defence and was beaten in crucial areas.
Gabriel: 5 - Conceded the penalty and was poor in defending Bowen's equaliser.
White: 6 - Got an assist for Odegaard's goal but looked deflated in the second half.
Partey: 4 - Really poor game from the midfielder which is rare to see, but looked far from the action today.
Odegaard: 6.5 - Scored and looked positive but unable to make a change in the second half.
Xhaka: 6 - Strong in midfield on a difficult day.
Martinelli: 6.5 - Had a quiet game for his standards, got an assist and looked positive but little attacking motivation in the second half from all.
Saka: 5.5 - Missed the penalty and looked far from the action.
Jesus: 7 - Got his goal early on and was arguably Arsenal's stand out performer, always wanting the ball all over the pitch.
Subs:
Jorginho: 5 - Gave the game more passing range but could have little impact.
Trossard: 5 - Looked lively, but again little opportunity to make an impact.
Nelson: 5 - Had little game time to make more of an impact.
Vieira: NA - Came on late.
Nketiah: NA - Came on late.