If many times Barcelona have had bad luck when the ball hits the post, this season they have to recognise the good luck they have had in terms of own goals.
They scored their fifth of the season against Olympiakos when Gerard Deulofeu's cross was converted by Nikolaou in the 18th minute, with Messi lurking.
Earlier this season the following opponents have scored own goals for Barcelina's benefit: Tosca (Betis) Aday and Gorka Iraizoz (Girona), Coates (Sporting CP).