Bite-sized action from the Emirates...
It was to be a disappointing day for City.
The Blues almost struck inside five minutes as first Josko Gvardiol and then Nathan Ake both went close following a corner.
But opportunities were few and far between at either end.
The game seemed destined to end in a goalless draw, when Martinelli’s shot hit the head of Ake and left Ederson wrong-footed as the ball flew into the net on 86 minutes.
The Gunners comfortably saw out the time that remained as City lost for the first time in 13 Premier League meetings with the North London side.
Watch the short highlights by playing the video above...