Arsenal boss Arsene Wenger was delighted with matchwinner Aaron Ramsey after victory at Champions League opponents Borussia Dortmund.
Ramsey nodded home a knockdown from Olivier Giroud on 62 minutes for the only goal of the game.
Wenger said: "This season he has gained confidence and he has an unbelievable engine to go from box to box. Confidence and his ability of course makes him a dangerous player.
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