A tearful Kei Nishikori says he "kept fighting right to the end" as the former world number four ends his professional career at the Japan Open.
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A tearful Kei Nishikori says he "kept fighting right to the end" as the former world number four ends his professional career at the Japan Open.

A tearful Kei Nishikori says he "kept fighting right to the end" as the former world number four ends his professional career at the Japan Open.