I think Mertesacker hasn't been at his best all season - maybe he's permanently past his best. Flamini might be in the same boat. Monreal's best isn't really very good, especially in the middle, so I don't expect a lot. Szczesny's poor form has been slightly hidden by the lack of shots he's faced, because he's been letting in a large proportion of shots he does face. I'm not a Rosicky fan, I rather gave up on him years ago. Podolski made no impact, but was hardly given a chance to - once again Arsene's substitutions seemed to come at odd times, but obviously not as odd as bringing on Podolski to close a game out in the 80th minute