Just when we needed him most in Athens, up popped Pierre-Emerick Aubameyang with a huge, late goal to keep our Europa League ambitions alive.
After a difficult season for our captain, it was another sign that he is getting back to his best - and took his tally to seven goals in his last seven games.
So what are the reasons behind his fine form?
“He is getting into much better positions, his rhythm during the games is much better with and without the ball, his movement too,” Mikel Arteta said.
“The week before when we played Benfica, he had three big chances and I am not worried about him missing them because I know if he gets in those positions, he is going to be scoring consistently - this is what he has to demand of himself. If we have Auba at his best, as a team we obviously have a much better chance to be successful.
“Sometimes when you go through difficult moments, you can have those difficult moments and get into a sad mood and I think that's the worst thing you can do because nobody has to feel sorry for themselves when you're having those moments. What you have to do is get upset, get angry, work harder and approach the situation and face it.
“Face the challenge in a way that creates more motivation and more hunger to do it and I think in recent weeks I've seen that reaction.
“For example, in a training session before we played here he missed a penalty and he was really upset. Instead of getting sad, he got upset and I said to the coaching staff that I like that and that he would be fine tomorrow. When you have that mentality, I think that's the right way to approach it.”