Pep Guardiola refused to shed light on a postmatch confrontation between Manchester City defender Kyle Walker and Arsenal set-piece coach Nicolas Jover on Sunday after the champions suffered back-to-back Premier League defeats for the first time in five years.
Gabriel Martinelli's 86th minute shot, which beat City keeper Éderson following a heavy deflection off defender Nathan Aké's face, was enough to seal a 1-0 win for Arsenal at The Emirates and move Mikel Arteta's unbeaten side into second spot in the table.