Arsenal completed a flawless Champions League league phase on Wednesday night with a 3-2 victory over Kairat Almaty at the Emirates Stadium. The early lead briefly stunned the visitors but Arsenal’s momentum was checked moments later. It was a rare concession for an Arsenal side that had been defensively secure throughout the league phase. A low cross from Havertz was helped on by Gyokeres and turned home by Gabriel Martinelli from close range. For Arsenal, the perfect league phase sets the platform for much bigger tests to come.