Charitybuzz: Novak Djokovic (US Open Men's Singles Champion) autographed Sergio Tacchini Nuki Men's Hat
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Novak Djokovic and Sergio Tacchini relationship could be on the rocks: This Week in Tennis Business with Justin Cohen - World Tennis Magazine
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Novak Djokovic: Serbian Superstar Wise to Part Ways with Sub-Par Sponsor | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
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Novak Djokovic to sign with UNIQLO; drops apparel sponsor Sergio Tacchini: This week in tennis business with Justin Cohen - World Tennis Magazine
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