It’s already been a strong start to the year for Kei Nishikori, highlighted by reaching his first ATP final since 2019 in Hong Kong—and in four short weeks, he’s already jumped from No. 106 ...

As former world No. 4 tennis star Kei Nishikori mulls over a dismal 2020 due to surgery and contracting the novel coronavirus, he finds hope from looking back two years ago. He was in a similar ...