Arsenal finally crack champions City as Martinelli settles tense tussle 

Martinelli fired in an 86th minute shot off a bewildered Nathan Ake

Arsenal players celebrate with the fans after Gabriel Martinelli scores their side's first goal of the game during the Premier League match at the Emirates Stadium, London. Picture  : John Walton/PA Wire. 

Premier League: Arsenal 1-0 Manchester City 0 

It is what is called getting your substitutions right. As Mikel Arteta luxuriated in his first league win against Manchester City as a manager, one to enhance seriously the title prospects of his Arsenal team, to fortify their belief, he could reflect on how his stars had aligned after a triple change on 76 minutes.