When Arsenal go a goal to the good, or even two, their opposition and even their own fans know that will not be enough.
The Gunners cannot keep a lead to save their season and it is costing them dearly.
It is not hard to get your side in shape so that at the very least, they are able to defend from set pieces, but Arsene Wenger seems to find this rather difficult.
Arsenal have second rate defenders, fair enough, but worse defences have been made to work together and keep goals out. Wenger needs to work out how to do the same with his.