Mikel Arteta’s side were virtually assured of ending the group phase in first place prior to Wednesday’s contest at the Emirates Stadium. Havertz gathered Ben White’s pass on the right flank before cutting inside on his left foot and delivering a clinical finish. Alamy Stock Photo Alamy Stock PhotoKairat could not live with Arsenal, and Gyokeres might easily have had a hat-trick before Gabriel Martinelli eventually netted Arsenal’s third. Alamy Stock Photo Alamy Stock PhotoThey had looked like being left to count the cost of poor form on the road in Europe and were facing a third away defeat in four games when Rasmus Hojlund gave Napoli the lead late in the first half. Hojlund gave the hosts the lead and at that stage the job looked too big for Chelsea, who had underwhelmed.