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Madrid, Spain. 8th May, 2019. (L-R) Juan Martin Del Potro (ARG), Kei Nishikori (JPN) Tennis : Kei Nishikori of Japan and Juan Martin Del Potro of Argentina during Doubles 2nd round match
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Madrid, Spain. 8th May, 2019. (L-R) Hugo Dellien (BOL), Referee, Kei Nishikori (JPN) Tennis : Hugo Dellien og Bolivia and Kei Nishikori of Japan before Singles 2nd round match on the ATP
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