Walcott scored his eighth goal of the season at the Emirates, but the pacey winger was more impressed with his side's performance at the back. Mesut Ozil who stole the headlines against the Bulgarians with the first hat-trick of his professional career, while Alexis Sanchez and Alex Oxlade-Chamberlain also got on the scoresheet. "Obviously the goals are fantastic but we always say we want to keep a clean sheet, that's always our first goal, and we managed to do that," Walcott said. Five things we learned from Arsenal's win over Ludogorets Wed, October 19, 2016 Express Sport brings you five things we learned as Arsenal cruised to victory over Ludogorets in their Champions League...
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