It is what is called getting your substitutions right. As Mikel Arteta luxuriated in his first win over Manchester City as a manager, one to seriously enhance the title prospects of his Arsenal team, he could reflect on how his stars had aligned after a triple change on 76 minutes.
For so long, it looked as though it could be another refereeing story. Nobody knows how this showpiece would have panned out if Mateo Kovacic had been sent off in the 35th minute. But Arsenal would have liked to find out.
