Jose Paolo Guerrero took advantage of a glaring mistake by the Bianconeri defence to fire his side into the lead in the 19th minute before a late Ivica Olic double compounded Juve´s woes.
Ranieri was delighted with his side´s defensive display in their 1-0 win over Arsenal on Saturday but they were all at sea against a side which finished fourth in the Bundesliga last season.
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