The England international produced a superbly weighted header to sent City ahead in the second minute of the game.
Arsenal's single shot on target says a lot about their performance. City never looked like losing the game even though they didn't hit the heights of recent weeks and months.
The Cityzens have now won 18 straight games and are unbeaten in 25. With regards to the Premier League table, City have moved 10 points clear at the top.
Fernandinho enjoyed a solid performance earning him nine points. As well as playing for the full 90 minutes, the Brazilian also helped his side to a clean sheet and earned three bonus points.
Oleksandr Zinchenko and Raheem Sterling also performed well, scoring eight points apiece.
Interestingly enough, the three City players outscored the entire Arsenal team who only managed 24 points between them.
From the managers
Arsenal manager Mikel Arteta speaking to Sky Sports: "When we conceded the first goal it put us in a difficult situation. It was tough. With the formation and the players they use they are really comfortable. After that the team reacted really well, were on top of the game and created chances but we lacked the quality in those situations to score the goal."
Manchester City manager Pep Guardiola talking to BBC Radio 5 Live: "It was brilliant. It was a real tough game, one of the toughest, for the way that they play, the quality and ideas that they have. It is so difficult and we did it."
Manchester City turn their attenton to the Champions League and an away midweek clash with Borussia Monchengladbach.
Despite losing, Arsenal played some good football and will enter their midweek Europa League clash with Benfica in good spirits.
Next weekend, the Gunners face another tough test as they travel to Leicester City.
Can anyone catch Manchester City now? The bookies certainly don't think so. Manchester City are 1/200 with Paddy Power to regain their Premier League crown. You can also get odds of 20/1 if you don't think they will get the job done.
Arsenal, in contrast, have drifted out to 35/1 to finish inside the top four.