FA Cup semi-final: Five ways Arsenal can mess up against minnows Reading today

3) Mertesacker caught out

Another who performed poorly in the Monaco game, Per Mertesacker can sometimes struggle with pacey players, particularly when Arsenal are in control of the ball, committing a lot of players forward and leaving space in behind for the German centre-back to be exposed. Although he’s a top player on his day, this might not be the best kind of game that suits him.