Xavi has denied that Barcelona's 2-0 defeat to AC Milan on Wednesday night was their worst performance of the season.
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The Spanish international was the only Barca player who even managed a shot on target at the San Siro, but he remains confident they can avoid elimination at the last-16 stage for the first time in five years.
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"I don't think this has been our worst match. We were bad, but it wasn't the worst," he told reporters.
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"We couldn't take advantage of the space on the wings or get something from a shot from distance. Simply we didn't dominate the details that in Europe end up costing you.
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"If you are good or bad you have to show it every day.
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Milan were strong and we couldn't get through in attack or stop them in defence. They made it very difficult for us, particularly after the first goal.
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"The result is very bad but there are 90 minutes left. Our generation hasn't had a historic comeback so we will try to do it."
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The league leaders' preparation for this weekend's clash at home to Sevilla is further complicated by the fact they have the second-leg of their Copa del Rey semifinal with Real Madrid to come on Tuesday.
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However, stand-in boss Jordi Roura will at least be able to call on David Villa after he missed the trip to Milan and Eric Abidal returns to the squad for the first time in a year after undergoing a liver transplant.
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Sevilla midfielder Ivan Rakitic meanwhile doesn't think the defeat to Milan will affect Barca's confidence and says that Unai Emery's men will not be distracted by their own cup semifinal against Atletico Madrid to come on Wednesday.
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"I always say to go game by game. We are going to try on Saturday and then there will be plenty of time to think about Wednesday," he told the club's website.