Nathan Ake was Manchester City’s hero as he snatched a 1-0 win for Pep Guardiola.
Mikel Arteta’s Gunners who are five points clear of champions city at the Premier League.
Takehiro Tomiyasu and full debutant leandro Trossard each drew fine save from City.
Kevin De Bruyne curled a sumptuous 25 yard strike just wide.
Man City and Arsenal are at zero upto first half and second half man City score 1.
Trossard was the pick of the Arsenal attack as Ake went about his primary job of shacking the in form bukayo Saka.
The Arsenal left winger then went it alone to again find City’s cup goalkeeper up to the challenge.
De Bruyne going close to the spectacular merely served to underline how peripheral.
It fell to Ake to show the sort of composure that deserted the forwards on display.