 At the China Open Kubot and Melo recorded their sixth straight victory beating Mao-Xin Gong and Ze Zhang to reach the semi-finals.The defending champions claimed 82 per cent of first-serve points (27/33) and did not face a break point to advance after 68 minutes.Without dropping a set throughout the entire tournament the Polish-Brazilian duo defeated Karen Khachanov and Andrey Rublev for a place in the championship match.