Good hard fought win in the end, but should have put it away earlier.
I think Arsene failed on the substitutions to be fair. Jenks on a yellow with Sunderland going at him was a risk. Should have brought on Miquel and moved Sagna to the right at half time. Ramsey had a poor game in general, but did a serviceable job at right back - still a very scary matchup though.
Then he finally brings on Miquel... but takes off Theo. My WTF moment. Ramsey was the player to be swapped for the natural move of Sagna to the right. And it would keep our blazing counter-attacking threat on the pitch. Its a situation that Theo thrives in (vs running at a packed back 8 ). The breaks we had towards the end - Theo would have made a difference IMO.
Chez saved our bacon, so all is mostly forgiven.
BTW, when the substitution was made my GF asked what was wrong. I just screamed "they're not listening to me!"