Pundits Mark Chapman and Matt Upson drew attention to one thing after Arsenal’s win over Olympiacos. “I mean, they’ve only conceded three in all competitions now this season.”MORE ARSENAL STORIESFormer Gunner Upson then suspected why no one is talking about how defensively strong Arsenal have been in the early stages of the season. Arsenal have started the season sublimely in all competitions, conceding just three goals, only one being from open play. To concede one goal from open play, having faced the likes of Liverpool, Manchester City and Newcastle United already, is quite something. Erling Haaland’s tremendous goal against Arsenal broke the Gunners from open play, but it took a moment of pure excellence from the Man City talisman to do so.