Djokovic To Meet Tipsarevic In Dubai QFs; Murray, Berdych On Song

World No. 1 Novak Djokovic will meet fellow Serbian Janko Tipsarevic in the quarter-finals of the Dubai Duty Free Tennis Championships on Thursday. Tipsarevic beat his friend in the round robin stages of the Barclays ATP World Tour Finals in November 2011.

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