After yet another relatively quiet night at the office, David Raya sprang into action. As soon as the referee pointed to the spot at Slavia Prague on Tuesday, Arsenal’s goalkeeper sprinted to the touchline to confer with the coach Iñaki Caña in a routine that began when the pair first worked together at Brentford. No matter that Arsenal were cruising at 3-0 up with five minutes remaining and on their way to a 10th straight victory – Raya was on the verge of creating history if he could save the penalty and keep the team’s eighth successive clean sheet.

In the end, the video assistant referee came to Arsenal’s rescue and the penalty was overturned, although Raya did have to save a simple effort from Youssoupha Mbodji in injury time from Slavia’s only shot on target. It was only the seventh save he has made in four Champions League ties, in which he has yet to concede a goal. Incredibly, since Nick Woltemade scored past Raya for Newcastle on 28 September, Arsenal have conceded only 12 shots on target in 12 hours and 56 minutes on their way to equalling a club clean sheets record established over two...