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Leipzig's Marcel Halstenberg (back) vies with Porto's Hector Herrera during a match of Group G of 2017-18 Champions League in Leipzig, Germany, on Oct. 17, 2017. Leipzig won 3-2. (Xinhua/Shan Yuqi)

Leipzig's Marcel Halstenberg (back) vies with Porto's Hector Herrera during a match of Group G of 2017-18 Champions League in Leipzig, Germany, on Oct. 17, 2017. Leipzig won 3-2. (Xinhua/Shan Yuqi)