Wenger praised Olivier Giroud after his two-goal performance.
Giroud had been left on the bench for the last two matches following a dip in form and some unwanted headlines about his private life.
"I had no hesitation about his strength of character. Of course you want him to come back into the team and be successful, which he was today because he scored two goals," said Wenger.
"One great one at the end of great movement and the other a little bit of a gift from Sunderland, he got an assist as well so he did well."
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