BRADENTON, Florida - Japan's former world No. 4 Kei Nishikori said Tuesday he is "barely hanging on" in terms of his physical condition after recently denying a report of his imminent retirement.

Speaking after the Elizabeth Moore Sarasota Open, an ATP Challenger Tour event, in Bradenton, Florida, the 36-year-old said his focus is on "the match right in front of me."

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